a
0.25 -uF parallel plate capacitor is connected to a 120 V battery.
Find the charge on one of the capacitor

The absolute values of the three least angles at which the light is completely cancelled are approximately 0.106 radians, 0.213 radians, and 0.320 radians, respectively.

To find the angles at which the light is completely cancelled (resulting in dark fringes), we can use the concept of diffraction and the equation for the position of dark fringes in a single slit diffraction pattern.

The equation for the position of dark fringes in a single slit diffraction pattern is given by:

sin(θ) = mλ / b

where θ is the angle of the dark fringe, m is the order of the fringe (m = 0 for the central fringe), λ is the wavelength of the light, and b is the width of the slit.

In this case, the wavelength of the laser light is given as 632.8 nm, which is equal to 632.8 × [tex]10^{-9}[/tex] m, and the width of the slit is 3.75 × 10^(-3) mm, which is equal to 3.75 × [tex]10^{-6}[/tex] m.

For the first-order dark fringe (m = 1), we can calculate the angle θ_1:

sin(θ_1) = (1)(632.8 × [tex]10^{-9}[/tex] m) / (3.75 × [tex]10^{-6}[/tex] m)

Using a calculator, we find θ_1 ≈ 0.106 radians.

For the second-order dark fringe (m = 2), we can calculate the angle θ_2:

sin(θ_2) = (2)(632.8 × [tex]10^{-9}[/tex] m) / (3.75 × [tex]10^{-6}[/tex] m)

Again, using a calculator, we find θ_2 ≈ 0.213 radians.

For the third-order dark fringe (m = 3), we can calculate the angle θ_3:

sin(θ_3) = (3)(632.8 × [tex]10^{-9}[/tex] m) / (3.75 × [tex]10^{-6}[/tex] m)

Once again, using a calculator, we find θ_3 ≈ 0.320 radians.

Therefore, the absolute values of the three least angles at which the light is completely cancelled are approximately 0.106 radians, 0.213 radians, and 0.320 radians, respectively.

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A) The rated output power and torque of the machine are approximately 50 kW and 151.92 Nm, respectively.

b) The starting torque is approximately 94.73 Nm, the stator starting current is approximately 57.14 A, and the power factor is approximately 0.8 lagging.

A) Calculation of rated output power and torque:

Rated Output Power (P) = (3 * V² * R) / (Z_total * 2)

P = (3 * (380 V)² * 5.2 Ω) / ((5.2 + j100.2) Ω * 2)

P ≈ 50 kW

Rated Torque (T) = (P * 1000) / (2 * π * n_r)

T = (50 kW * 1000) / (2 * π * (960 rpm * (2π rad/1 min)))

T ≈ 151.92 Nm

b) Calculation of starting torque, stator starting current, and power factor:

Starting Torque (T_start) = (3 * V² * R₂) / (s * Z_total)

T_start = (3 * (380 V)² * 3.2 Ω) / (1 * (5.2 + j100.2) Ω)

T_start ≈ 94.73 Nm

Stator Starting Current (I_start) = (V / Z_total) * (R / √(R² + X²))

I_start = (380 V / (5.2 + j100.2) Ω) * (5.2 Ω / √(5.2² + 100.2²) Ω)

I_start ≈ 57.14 A

Power Factor (cos(θ)) = R / √(R² + X²)

cos(θ) = 5.2 Ω / √(5.2² + 100.2²) Ω

cos(θ) ≈ 0.8

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Corresponding phase angle The formula for calculating the phase angle is:φ = atan((c/2m) / (k * m * wn^2 - (c/2m) ^2 )^1/2) = 14.0762°The corresponding phase angle is 14.0762°.

The motion of a 1750.87-kg machine mounted on simply supported steel beams is shown in the figure. A harmonic force of magnitude Fo = 3175.15 kg and frequency ωn=60 rad/sec is produced by a piston that moves up and down in the machine.

The weight of the beam is ignored, and 10% of the critical damping is assumed. The amplitude of the motion of the machine, the force transmitted to the beam support

and the corresponding phase angle are all determined. Solution:(i) Amplitude of the motion of the machineThe formula for calculating the amplitude of the machine's motion is:Amp = Fo/(k * m * wn^2 - (c/2m) ^2 )^1/2Where k is the spring constant, m is the mass of the machine,

c is the damping coefficient, and wn is the natural frequency of the system.k = 4EI/L = 4(200 * 10^9)(2 * 10^-4)/2.5 = 6.4 * 10^6 N/mThe natural frequency is calculated as follows:wn = (k/m)^0.5 = (6.4 * 10^6/1750.87)^0.5 = 139.45 rad/sLet us first compute the damping coefficient.c = ζ * 2 * m * wnζ = 0.1 = c/2m * wn * 100c = 0.1 * 2 * 1750.87 * 139.45 = 4879.7 N.s/m

Therefore, the amplitude of the machine's motion isAmp = 3175.15/(6.4 * 10^6 * 1750.87 * 139.45^2 - (4879.7/2 * 1750.87) ^2 )^1/2= 0.0004599 m or 0.4599 mm.(ii) Force transmitted to the beam supportsThe formula for calculating the force transmitted to the beam supports is:F = Fo * (c/2m) / ((k * m * wn^2 - (c/2m) ^2 )^1/2) = 63.5067 NThe force transmitted to the beam supports is 63.5067 N.

(iii) Corresponding phase angleThe formula for calculating the phase angle is:φ = atan((c/2m) / (k * m * wn^2 - (c/2m) ^2 )^1/2) = 14.0762°The corresponding phase angle is 14.0762°.

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The task is to determine the resultant of three vectors: 75 m/s [South], 105 m/s [N 70° E], and -100 m/s [E 35° S]. A vector diagram will be drawn to visually represent the vectors, and the resultant will be determined by vector addition.

To determine the resultant of the given vectors, we will first draw a vector diagram. Each vector will be represented by an arrow with the appropriate magnitude and direction. The given magnitudes and directions are 75 m/s [South], 105 m/s [N 70° E], and -100 m/s [E 35° S].

To add the vectors, we start by placing the tail of the second vector at the head of the first vector. Then, we place the tail of the third vector at the head of the resultant of the first two vectors. The resultant vector is the vector that connects the tail of the first vector to the head of the third vector.

By measuring the magnitude and direction of the resultant vector using a ruler and protractor, we can determine its values. The magnitude represents the length of the vector, and the direction represents the angle with respect to a reference direction, usually the positive x-axis.

Once the resultant vector is determined, it can be labeled and stated. The label indicates the magnitude and units of the resultant vector, and the statement indicates the direction of the resultant vector, usually relative to a reference direction or in terms of cardinal directions.

By following this process and accurately drawing the vector diagram, we can determine the resultant of the given vectors.

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The inductance of Tarik's solenoid in μH is 13.4 μH.

To find the inductance of Tarik's solenoid, we can use the following formula:

L=μ0 * n^2 * A/L, Where:L is the inductance of the solenoid, n is the number of turns, A is the cross-sectional area of the solenoid, L is the length of the solenoid, μ0 is the permeability of free space (4π x 10^-7 H/m)

Given that: The number of turns of wire is n = 189The diameter of the tube is 6.21 mm, therefore the radius of the tube, r = 6.21 / 2 = 3.105 mm

The length of the tube, L = 2.01 cm = 0.0201 m

The cross-sectional area of the tube, A = πr^2 = 3.14 x (3.105 x 10^-3)^2 = 7.59 x 10^-5 m^2

Substituting the given values into the formula:

L=μ0 * n^2 * A/L= 4π x 10^-7 x 189^2 x 7.59 x 10^-5 / 0.0201L=13.4 μH

Therefore, the inductance of Tarik's solenoid is 13.4 μH (microhenrys).

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The question requires the calculation of the Earth's average temperature in °C if the earth had no atmosphere given the following information.

Sun's intensity at the distance of the earth is 1370 W/m².

30% of this energy is reflected by water and clouds;

70% is absorbed.

The emissivity of the surface is very close to 1. The actual average temperature of the earth, about 15 °C, is higher than the calculation because of the greenhouse effect.

Calculation of Earth's temperature:

The formula to determine the temperature is given by P = e σ A T⁴. Here,

P is the power received by the Earth from the Sun.

A is the surface area of the Earth,

T is the temperature in kelvin,

e is the emissivity of the surface,

σ is the Stefan-Boltzmann constant, and the remaining terms have the usual meanings.

Substituting the values in the formula,

P = (1 - 0.30) × 1370 W/m² × 4π (6,371 km)²

= 9.04 × 10¹⁴ Wσ

= 5.67 × 10⁻⁸ W/m² K⁴A

= 4π (6,371 km)²

= 5.10 × 10¹⁴ m²e = 1

Hence, the formula now becomes

9.04 × 10¹⁴ = 1 × 5.67 × 10⁻⁸ × 5.10 × 10¹⁴ × T⁴

⇒ T⁴ = 2.0019 × 10⁴

⇒ T = 231.02

K= -42.13°C

Answer: The Earth's average temperature would be -42.13°C.

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y load w/ Impedance = 2 + jyA load w/ impedance = 3 - j6r

Real line voltage at the source = 24 Vrms

Formula used in the calculation of the power delivered to the parallel loads is

P = VI cosφ where P is the power delivered to the loadsI is the current flowing through the loads V is the voltage across the loadscosφ is the power factor of the loads.

The formula used in the calculation of the impedance in a parallel combination is(1/Z) = (1/Z1) + (1/Z2) where Z is the total impedance in the circuit Z1 is the impedance of the y load Z2 is the impedance of the A load

Using the formula for parallel impedance, we get, (1/Z) = (1/Z1) + (1/Z2)(1/Z) = (1/(2 + jy)) + (1/(3 - j6r))

Multiplying both numerator and denominator by the conjugate of (2 + jy), we get,(1/Z) = (2 - jy)/(4 + y²) + (3 + j6r)/(9 + 36r²)

As per the given data, the real line voltage at the source is 24 Vrms. Hence, we can write the equation as,

P = VI cosφ.I = V/RI = 24 Vrms/(4.1178 + j1.0174)I = 5.8174 - j1.4334R = (1/Z) × |V|²R = 0.6059 kΩ

Now, the impedance of y load Z1 is 2 + jy. Therefore, we have the following two equations to solve the problem:

Z1 = 2 + jy(1/Z) = (2 - jy)/(4 + y²) + (3 + j6r)/(9 + 36r²)

We can substitute Z1 in the second equation to get the value of Z, as shown below:

(1/Z) = (2 - jy)/(4 + y²) + (3 + j6r)/(9 + 36r²)

Now, we can solve the equation for Z, Z = 0.4156 - j0.1344

Substituting the values of Z and V in the formula P = VI cosφ, we get, P = (24 Vrms) × (5.8174 A) × 0.8483P = 1186.07 W

The power delivered to the parallel loads is 1186.07 W.

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The energy produced from fission 1.00 kg of 235U is 8.99 kJ. Fission is the process in which a large nucleus divides into two or more fragments. Uranium-235 is the most widely used fissile material, which can undergo a fission reaction.

During the fission of 235U, a Q-value of 208 MeV/fission is generated. In a fission of 235U, the Q value is 208 MeV/fission. The molar mass of 235U is 235 g/mol. 1 mol of 235U contains 6.02 x 10²³ atoms/mol. A single nucleus of 235U produces Q = 208 MeV when fission occurs. The amount of energy generated per mole of 235U fission is calculated below:1 mole of 235U = 235 g = 235/1000 kg = 0.235 kg1 mole of 235U contains 6.02 x 10²³ nuclei Q value per 235U nucleus = 208/6.02 x 10²³ MeV/nucleus Q value per 1 mole of 235U = (208/6.02 x 10²³) x 6.02 x 10²³ = 208 MeV/mol.

Therefore, the energy released per 1 mole of 235U fission is 208 MeV/mol. If 1.00 kg of 235U is fissioned, then the number of moles of 235U will be; Mass of 235U = 1.00 kg = 1000 g, Number of moles of 235U = Mass of 235U / Molar mass of 235UNumber of moles of 235U = 1000 g / 235 g/mol = 4.26 mol. The energy produced from fissioning 1.00 kg of 235U can be calculated as follows: Energy produced = 208 MeV/mol x 6.02 x 10²³ nuclei/mol x 4.26 mol = 5.63 x 10²¹ eV= 8.99 x 10³ J= 8.99 kJ

Answer: The energy produced from fission 1.00 kg of 235U is 8.99 kJ.

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The equilibrium position for the third charge, Q₃, held fixed on a line between charges Q₁ and Q₂ with values -3C and -5C respectively, can be determined to be an unstable equilibrium.

To determine the stability of the equilibrium position for Q₃, we can examine the forces acting on it. The force experienced by Q₃ due to the electric fields created by Q₁ and Q₂ is given by Coulomb's law:

[tex]\[ F_{13} = k \frac{{Q_1 Q_3}}{{r_{13}^2}} \][/tex]

[tex]\[ F_{23} = k \frac{{Q_2 Q_3}}{{r_{23}^2}} \][/tex]

where F₁₃ and F₂₃ are the forces experienced by Q₃ due to Q₁ and Q₂, k is the electrostatic constant, Q₁, Q₂, and Q₃ are the charges, and r₁₃ and r₂₃ are the distances between Q₁ and Q₃, and Q₂ and Q₃, respectively.

In this case, both Q₁ and Q₂ are negative charges, indicating that the forces experienced by Q₃ are attractive towards Q₁ and Q₂. Since Q₃ is free to move along the line, any slight displacement from the equilibrium position would result in an imbalance of forces, causing Q₃ to experience a net force that drives it further away from the equilibrium position.

This indicates an unstable equilibrium, as the system is inherently unstable and any perturbation leads to an increasing displacement. Therefore, the equilibrium position for Q₃ in this configuration is determined to be an unstable equilibrium.

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Friction is an important property of nanomaterials as it significantly influences their behavior and performance at the nanoscale. Understanding friction at this scale is crucial for various applications and technologies involving nanomaterials.

When materials are reduced to nanoscale, their properties differ significantly from those at the bulk level. Due to the larger surface area, the atoms in nanomaterials have more surface energy, which results in increased reactivity and enhanced performance. Understanding the friction between materials is essential for developing efficient lubricants, coatings, and materials for various applications. It is also critical for the design of nanoelectromechanical systems, where devices operate at the nanoscale and friction plays a critical role in their performance. Friction is a force that resists motion between two surfaces in contact, and in nanomaterials, the adhesion forces and van der Waals forces between the surfaces are stronger.

Due to this, the frictional forces in nanomaterials are larger than those in bulk materials, making friction the most important property of nanomaterials. Friction affects the mechanical properties of nanomaterials and can lead to surface degradation, wear, and reduced lifetime. Therefore, understanding the frictional properties of nanomaterials is crucial for developing durable and high-performance materials. In conclusion, friction is the most important property of nanomaterials because it plays a crucial role in understanding the behavior and performance of materials at the nanoscale, which is essential for developing high-performance materials and devices.

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at full power, the imaginary sports car will take 4.00 s for acceleration from 0 to 60.0 mph, which is twice the time it takes to accelerate from 0 to 30.0 mph due to the constant power provided by the engine.

Since the power is constant, we have P = F1v1 = F2v2, where F1 and v1 correspond to the initial values, and F2 and v2 correspond to the final values.In this case, the car accelerates from 0 to 30.0 mph in 1.00 s, which gives us the following relation: P = F1 * 30.0 mph. Let's call this equation (1).

Now, we need to find the time it takes for the car to accelerate from 0 to 60.0 mph. We can use equation (1) again, but this time with the final velocity of 60.0 mph: P = F2 * 60.0 mph. Let's call this equation (2).Since the power is constant, we can equate equations (1) and (2) to find the ratio of the forces: F1 * 30.0 mph = F2 * 60.0 mph.Dividing both sides of the equation by F2 and rearranging, we get F1/F2 = 60.0 mph / 30.0 mph = 2.

This means that the force at full power is twice as large when accelerating from 0 to 60.0 mph compared to accelerating from 0 to 30.0 mph.Since the force is directly proportional to acceleration, the acceleration will also be twice as large. Therefore, the time it takes to accelerate from 0 to 60.0 mph will be twice the time it takes to accelerate from 0 to 30.0 mph, which is 2.00 s.To summarize, at full power, the imaginary sports car will take 4.00 s to accelerate from 0 to 60.0 mph, which is twice the time it takes to accelerate from 0 to 30.0 mph due to the constant power provided by the engine.

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(a) The physical length of the pulse as it travels through space is 3.933 * 10^-3 m

(b) The number of photons in the pulse is 1.364 * 10^19 photons.

(c) The number of photons per cubic millimeter is 1.004 * 10^18 photons/mm³.

Energy E = 3.901 J

wavelength λ = 694.3 nm

pulse duration t = 13.1 ps

As we know that Speed of light (c) = λ * f

where f is the frequency of light.

So,

Frequency of light f = c/λ

                                 = (3*10^8 m/s) / (694.3*10^-9 m)

                                = 4.32 * 10^14 Hz.

(a)

Now, the physical length of pulse is given as:

L = c*t

  = (3*10^8 m/s) * (13.1 * 10^-12 s)

L = 3.933 * 10^-3 m

So, the physical length of the pulse as it travels through space is 3.933 * 10^-3 m.

(b)

Energy of one photon is given by the Planck's equation

E = hf

where h is the Planck's constant and f is the frequency of light.

Energy of one photon = hf = (6.626 * 10^-34 J*s) * (4.32 * 10^14 Hz)

Energy of one photon = 2.86 * 10^-19 J

Number of photons = Energy / Energy of one photon

Number of photons = 3.901 J / 2.86 * 10^-19 J

Number of photons = 1.364 * 10^19 photons.

So, the number of photons in the pulse is 1.364 * 10^19 photons.

(c)

Area of the circular cross section A = πr²

where r is the radius of the cross section, given by

r = 0.6/2 = 0.3 cm

 = 0.003 m.

A = π(0.003 m)²

A = 2.827 * 10^-5 m²

Volume of the cross section = length * area

                                               = 3.933 * 10^-3 m * 2.827 * 10^-5 m²

                                               = 1.112 * 10^-7 m³

The number of photons per unit volume is given by:

N/V = n/A * λ

      = (1.364 * 10^19 photons) / (1.112 * 10^-7 m³) * (694.3*10^-9 m)

N/V = 1.004 * 10^24 photons/m³.

      = 1.004 * 10^18 photons/mm³.

Therefore, the number of photons per cubic millimeter is 1.004 * 10^18 photons/mm³.

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a. The value of g is one-eighth (1/8) of its original value, g0. b. The value of g is inversely proportional to the radius R. c. Therefore, the value of g is directly proportional to the radius R.

To calculate the values of g at Earth's surface for the given changes in Earth's properties, we can use Newton's law of universal gravitation and the equation for gravitational acceleration.

The gravitational acceleration at the surface of a planet can be calculated using the equation:

g = G * (M / R^2)

where g is the gravitational acceleration, G is the gravitational constant (approximately 6.67430 × 10^-11 m^3 kg^-1 s^-2), M is the mass of the planet, and R is the radius of the planet.

a. Doubling Earth's mass and quadrupling its radius:

If the mass is doubled (2M) and the radius is quadrupled (4R), the equation for gravitational acceleration becomes:

g = G * (2M / (4R)^2)

g = G * (2M / 16R^2)

g = (1/8) * G * (2M / R^2)

g = (1/8) * g0

Therefore, the value of g is one-eighth (1/8) of its original value, g0.

b. Quartering the mass density and keeping the radius unchanged:

If the mass density is quartered (1/4ρ) and the radius remains unchanged, the equation for gravitational acceleration becomes:

g = G * ((1/4ρ) * (4/3πR^3) / R^2)

g = (1/3) * (4/4) * (G * (1/4πR^2) * (4/3πR^3))

g = (1/3) * (1/R)

g = g0/R

Therefore, the value of g is inversely proportional to the radius R.

c. Quadrupling the mass density and keeping the mass unchanged:

If the mass density is quadrupled (4ρ) and the mass remains unchanged, the equation for gravitational acceleration becomes:

g = G * (M / R^2)

g = (4ρ) * G * (4πR^3 / 3) / R^2

g = (16/3) * (πR^3 / R^2)

g = (16/3) * (R / 3)

Therefore, the value of g is directly proportional to the radius R.

Note: In each case, g0 represents the original value of gravitational acceleration at Earth's surface.

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The statement that the objects' kinetic energy after the collision is equal to their total kinetic energy before the collision is false in this case.

In a collision between two objects, the total kinetic energy of the system is not always conserved. This is particularly true in inelastic collisions, where the objects stick together after the collision. In an inelastic collision, there is a transfer of kinetic energy to other forms such as deformation energy, sound, or heat. As a result, the total kinetic energy of the system decreases.

In the given scenario, Object 1 and Object 2 are moving towards each other with different velocities. When they collide, they stick together and move as a combined object. Due to the sticking together, there is a transfer of kinetic energy between the objects.

Before the collision, Object 1 has a kinetic energy of (1/2)mv1^2, and Object 2 has a kinetic energy of (1/2)m2v2^2, where m1 and m2 are the masses of the objects, and v1 and v2 are their respective velocities. The total kinetic energy before the collision is the sum of these individual kinetic energies.

After the collision, when the objects stick together, they move with a common velocity. The combined object now has a mass of (m1 + m2). The kinetic energy of the combined object is (1/2)(m1 + m2)v^2, where v is the common velocity after the collision.

Since the objects stick together, the magnitude of the common velocity is generally less than the relative velocities of the individual objects before the collision. As a result, (1/2)(m1 + m2)v^2 is generally less than (1/2)m1v1^2 + (1/2)m2v2^2. Therefore, the total kinetic energy after the collision is less than the total kinetic energy before the collision.

Hence, the statement that the objects' kinetic energy after the collision is equal to their total kinetic energy before the collision is false in this case.

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The energy uncertainty within an interval of 0.001645 seconds is equal to or greater than 1.006 x 10^-32 Joules.

The equation you provided is the Heisenberg uncertainty principle for simultaneous measurements of energy (ΔE) and time (Δt):

ΔE Δt ≥ h / (4π)

To calculate the energy uncertainty within an interval of 0.001645 seconds, we can rearrange the equation:

ΔE ≥ h / (4π Δt)

Given that Δt = 0.001645 seconds and h is Planck's constant (approximately 6.626 x 10^-34 J·s), we can substitute these values into the equation:

ΔE ≥ (6.626 x 10^-34 J·s) / (4π × 0.001645 s)

Calculating the right side of the equation:

ΔE ≥ 1.006 x 10^-32 J

Therefore, the energy uncertainty within an interval of 0.001645 seconds is equal to or greater than 1.006 x 10^-32 Joules.

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Therefore, the width of the central bright fringe is 0.11525 mm or approximately 1.16 × 10⁻¹ mm.Answer: 1.16 mm.

The formula to determine the angular width of the central maximum in the diffraction pattern is:$$\theta = 2.44 \frac{\lambda}{d}$$where:θ = angular widthλ = wavelengthd = slit width.Substituting the values,θ = 2.44 × (633 × 10⁻⁹) / (0.340 × 10⁻³) = 0.00004610The width of a bright fringe is the distance between the minima on either side. So, the width of the central bright fringe is twice the distance between the central maximum and the first minimum on either side. Therefore, the width of the central bright fringe is given by:$$w = 2 \theta L$$where:w = width of central bright fringeθ = angular widthL = distance between the slit and the screenSubstituting the values,w = 2 × 0.00004610 × 2.5 = 0.00011525 m = 0.11525 mm (approx). Therefore, the width of the central bright fringe is 0.11525 mm or approximately 1.16 × 10⁻¹ mm.Answer: 1.16 mm.

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The total flux leaving the cube is 8.4×10⁴ Nm²/C.

a. To draw point charges and cube at their respective locations, the following plot can be used:

Image plot of point charges and cube.

b. The total flux leaving the cube is to be determined. The flux leaving the cube due to each charge will be calculated first. Total flux will be the algebraic sum of the flux due to all three charges. Mathematically, it is given by:

ϕ = ϕ1 + ϕ2 + ϕ3

The electric flux due to a point charge is given by:

ϕ = q / (ε₀ * r²)

Where q is the charge of the point charge, ε₀ is the permittivity of free space, and r is the distance between the point charge and the cube.

Therefore, using the above equation, the electric flux due to each point charge can be calculated as:

q₁ = 15 nC, r₁ = √(1 + 1.25² + 0.5²) = 1.68 m

q₂ = 12 nC, r₂ = √(2.25² + 1² + 1.25²) = 2.76 m

q₃ = -12 nC, r₃ = √(1² + 0.5² + 1.25²) = 1.62 m

Substituting the values in the above equation,

ϕ₁ = (15×10⁻⁹) / (8.854×10⁻¹² * 1.68²) = 2.08×10⁶ Nm²/C

ϕ₂ = (12×10⁻⁹) / (8.854×10⁻¹² * 2.76²) = 1.05×10⁶ Nm²/C

ϕ₃ = (-12×10⁻⁹) / (8.854×10⁻¹² * 1.62²) = -2.29×10⁶ Nm²/C

Total Flux ϕ = ϕ₁ + ϕ₂ + ϕ₃

ϕ = 2.08×10⁶ + 1.05×10⁶ - 2.29×10⁶ = 8.4×10⁴ Nm²/C

Thus, the total flux leaving the cube is 8.4×10⁴ Nm²/C.

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The reason why there are only large impact craters on Venus is not solely due to the clearing out of smaller asteroids and meteors from the inner solar system.

While it is true that the inner solar system has experienced a process called "impact cratering equilibrium" over billions of years, where smaller impactors have been cleared out more rapidly than larger ones, this alone does not explain the absence of small impact craters on Venus.

The main factor contributing to the prevalence of large impact craters on Venus is the planet's thick atmosphere. Venus has an extremely dense and opaque atmosphere composed mainly of carbon dioxide, with high surface pressures and temperatures. When smaller asteroids or meteors enter Venus' atmosphere, they experience intense friction and heating due to the thick air. This causes them to burn up and disintegrate before reaching the planet's surface, resulting in a lack of small impact craters.

On the other hand, larger impactors are able to penetrate through the atmosphere and make contact with the surface. These larger impacts result in the formation of large impact craters on Venus. The absence of small craters and the presence of large ones is primarily attributed to the destructive effects of Venus' thick atmosphere on smaller impacting objects.

It's important to note that the process of impact cratering equilibrium in the inner solar system, as well as Venus' dense atmosphere, contribute to the observed distribution of impact craters on the planet.

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The wavelength at relativistic speeds is 3.29 x 10^-12 m and the kinetic energy of an electron with a wavelength of 1.0 fm is 8.66 GeV.

(a) The formula for de Broglie wavelength is:

λ = h/p

where λ is wavelength, h is Planck's constant, and p is momentum. The formula for momentum is p = mv, where m is mass and v is velocity. At speeds approaching C, the relativistic momentum must be used, which is given by the formula p = γmv where γ is the Lorentz factor. Therefore, the formula for de Broglie wavelength at relativistic speeds is:

λ = h/γmv

v = 0.960c = 0.960 x 3 x 10^8 m/s

m = 9.11 x 10^-31 kg (mass of an electron)

h = 6.626 x 10^-34 J·s (Planck's constant)

γ = 1/√(1-v²/c²) = 1/√(1-0.960²) = 2.92 (Lorentz factor)

Substituting into the formula:

λ = (6.626 x 10^-34)/(2.92 x 9.11 x 10^-31 x 0.960 x 3 x 10^8)

λ = 3.29 x 10^-12 m

(b) The formula for de Broglie wavelength is:

λ = h/p

where λ is wavelength, h is Planck's constant, and p is momentum. The formula for momentum is p = mv, where m is mass and v is velocity. The kinetic energy can be found using the formula:

KE = (γ - 1)mc²

λ = 1.0 x 10^-15 m (size of the nucleus)

h = 6.626 x 10^-34 J·s (Planck's constant)

m = 9.11 x 10^-31 kg (mass of an electron)

c = 3 x 10^8 m/s (speed of light)

λ = h/p ⇒ p = h/λ

Substituting into the formula:

p = h/λ = (6.626 x 10^-34)/(1.0 x 10^-15)

p = 6.626 x 10^-19 kg·m/s

Kinetic energy:

KE = (γ - 1)mc²

Given the wavelength λ = 1.0 fm = 1.0 x 10^-15 m

We can calculate momentum p = h/λ = 6.626 x 10^-19 kg·m/s.

Substituting into the formula:

KE = (γ - 1)mc²

where m = 9.11 x 10^-31 kg and c = 3 x 10^8 m/s

KE = [(1/√(1-v²/c²)) - 1]mc²

Solving for v gives:

v = c√[1 - (mc²/KE + mc²)²]

Substituting the values:

mc² = 0.511 MeV (rest energy of an electron)

KE = hc/λ = (6.626 x 10^-34 x 3 x 10^8)/(1.0 x 10^-15) = 1.989 x 10^3 MeV

c = 3 x 10^8 m/s

The formula now becomes:

v = c√[1 - (mc²/KE + mc²)²] = 0.999999996c (approx)

γ = 1/√(1-v²/c²) = 5.24

Substituting into the formula:

KE = (γ - 1)mc² = 8.66 x 10^3 MeV = 8.66 GeV

Thus, the kinetic energy of an electron with a wavelength of 1.0 fm is 8.66 GeV.

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The correct answer Separation of the central bright fringe from the next bright fringe in the interference pattern =option is C. 1.3 cm.

We can calculate the separation of the central bright fringe from the next bright fringe in the interference pattern using the formula below:dx = λD/dwhereλ = 540 nm = 540 × 10⁻⁹ mD = 5.2 m d = 0.22 mm = 0.22 × 10⁻³ m= 2.2 × 10⁻⁴ m.

Substituting the given values in the formula, we get:dx = λD/d= (540 × 10⁻⁹ m) × (5.2 m)/ (2.2 × 10⁻⁴ m)= 12.9 × 10⁻³ m = 1.3 × 10⁻² cmThus, the separation of the central bright fringe from the next bright fringe in the interference pattern on a screen 5.2 m from the double slit is 1.3 cm.

Separation of the central bright fringe from the next bright fringe in the interference pattern = 1.3 cm (rounded off to one decimal place).

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The potential difference between the plates of a 3.0-F capacitor that stores sufficient energy to operate a 75.0-W light bulb for one minute is 3000 volts.

A capacitor that stores sufficient energy to operate a 75.0-W light bulb for one minute will have a potential difference of 3000 V between the plates.What is a capacitor?Capacitors are electronic devices that can store an electric charge temporarily. The unit of capacitance is the farad (F). It can be calculated by dividing the charge stored in one plate by the potential difference between the two plates.C=Q/VPotential Difference between plates of a 3.0-F capacitor that stores sufficient energy to operate a 75.0-W light bulb for one minuteIn this case, we have to determine the potential difference between the plates of the capacitor.

The energy stored in the capacitor can be computed by the formula:Energy stored in a capacitor E = 1/2CV²Where,C is the capacitanceV is the potential difference between the platesE is the energy stored in the capacitorWe can rearrange the formula to obtain the potential difference between the plates of the capacitor as:V = √(2E/C)Watts is a unit of power. To calculate the energy in watt-hours, we must convert 75.0 W to watt-hours by multiplying by time, which is 1 minute (60 seconds).

Watt-hours = Power x Time = 75.0 x 1/60 = 1.25 WhTo calculate the energy in joules, we need to convert watt-hours to joules.1 Wh = 3.6 x 10^3 J1.25 Wh = 1.25 x 3.6 x 10^3 J = 4.5 x 10^3 JSubstitute the values of capacitance and energy into the formula above to get the potential difference between the plates of the capacitor.V = √(2E/C) = √(2 × 4.5 × 10³ / 3) = 3000 voltsTherefore, the potential difference between the plates of a 3.0-F capacitor that stores sufficient energy to operate a 75.0-W light bulb for one minute is 3000 volts.

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The magnitude of the change in linear momentum of the ball is 1.044 kg m/s.

m₁ = 0.87 kg (mass of the ball)

v₁ = 4.1 m/s (initial velocity)

v₂ = 2.9 m/s (final velocity)

The change in linear momentum (Δp) can be calculated as:

Δp = m₁ * (v₂ - v₁)

Substituting the given data:

Δp = 0.87 kg * (2.9 m/s - 4.1 m/s)

Δp = 0.87 kg * (-1.2 m/s)

Δp = -1.044 kg m/s

The magnitude of the change in linear momentum is the absolute value of Δp:

|Δp| = |-1.044 kg m/s|

|Δp| = 1.044 kg m/s

Therefore, the magnitude of the change in linear momentum of the ball is 1.044 kg m/s.

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The frequency of a sound wave with a wavelength of 5.0 m and a speed of 330 m/s is 66 Hz(option d).

Sound is a longitudinal wave (option b).

The formula to calculate the frequency of a wave is:

[tex]\[ f = \frac{v}{\lambda} \][/tex]

where f is the frequency, v is the speed of the wave, and[tex]\( \lambda \)[/tex]is the wavelength. Given that the wavelength is 5.0 m and the speed is 330 m/s, we can substitute these values into the formula:

[tex]\[ f = \frac{330 \, \text{m/s}}{5.0 \, \text{m}} = 66 \, \text{Hz} \][/tex]

Therefore, the frequency of the sound wave is 66 Hz.

Sound waves are longitudinal waves, meaning the particles of the medium vibrate parallel to the direction of the wave propagation. Unlike electromagnetic waves, which can travel through a vacuum, sound waves require a medium (such as air, water, or solids) to propagate. Thus, sound is not an electromagnetic wave.

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The de Broglie wavelength of the electron under these circumstances is 2.66 x 10^-10 m and the momentum of the electron in its orbit is 1.98 x 10^-24 kg·m/s.

(a) de Broglie's equation states that

λ=h/p

where,

λ is the wavelength

p is the momentum of the particle

h is Planck's constant = 6.626 x 10^-34 J·s

Firstly, we need to find the velocity of the electron in its orbit using the Bohr's model's formula:

v= (Z* e^2)/(4πε0rn)

where

Z=1 for hydrogen,

e is the charge on the electron,

ε0 is the permitivity of free space,

rn is the radius of the orbit

Substituting the given values into the equation,

v = [(1*1.6 x 10^-19 C)^2/(4π*8.85 x 10^-12 C^2 N^-1 m^-2)(6 * 10^-10 m)] = 2.18 x 10^6 m/s

Now, using de Broglie's equation:

λ = h/p

λ= h/mv

Substituting the values in the equation,

λ = 6.626 x 10^-34 J·s/(9.109 x 10^-31 kg) (2.18 x 10^6 m/s)λ= 2.66 x 10^-10 m

Therefore, the de Broglie wavelength of the electron under these circumstances is 2.66 x 10^-10 m.

(b) We have already found the velocity of the electron in its orbit in part (a):

v= 2.18 x 10^6 m/s

Using the formula,

p = mv

The mass of an electron is 9.109 x 10^-31 kg

Therefore,

p = 9.109 x 10^-31 kg (2.18 x 10^6 m/s)

p= 1.98 x 10^-24 kg·m/s

Thus, the momentum of the electron in its orbit is 1.98 x 10^-24 kg·m/s.

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Part A: The spring stiffness constant is approximately 63.6 N/m.

Part B: The amplitude of vibration is approximately 0.017 m.

Part C: The frequency of vibration is approximately 2.73 Hz.

To determine the spring stiffness constant, we can use Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position.

Part A:

Given:

Stretch of the scale (displacement), Δx = 3.3 cm = 0.033 m

Weight of the fish, F = 2.1 kg

Hooke's Law equation:

F = k * Δx

Rearranging the equation to solve for the spring stiffness constant:

k = F / Δx

Substituting the given values:

k = 2.1 kg / 0.033 m ≈ 63.6 N/m

Therefore, the spring stiffness constant is approximately 63.6 N/m.

Part B:

To find the amplitude of vibration, we need to determine the maximum displacement from the equilibrium position. In simple harmonic motion, the amplitude is equal to half the total displacement.

Given:

Total displacement, Δx = 3.4 cm = 0.034 m

Amplitude, A = Δx / 2

Substituting the given value:

A = 0.034 m / 2 = 0.017 m

Therefore, the amplitude of vibration is approximately 0.017 m.

Part C:

The frequency of vibration can be calculated using the formula:

f = (1 / 2π) * √(k / m)

Given:

Spring stiffness constant, k = 63.6 N/m

Mass of the fish, m = 2.1 kg

Substituting the given values into the formula:

f = (1 / 2π) * √(63.6 N/m / 2.1 kg)

Calculating the frequency:

f ≈ (1 / 2π) * √(30.2857 N/kg) ≈ 2.73 Hz

Therefore, the frequency of vibration is approximately 2.73 Hz.

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The Capacitance that will allow the light to stay on for 5 seconds is C = 0.4166666666666667 F.

A time constant is defined as the time it takes for a capacitor to charge to about 63.2 percent of its ultimate charge after a change in voltage is applied to it. A capacitor with a time constant of one second, for example, takes approximately one second to reach 63.2 percent of its ultimate charge when it is charged via a resistor.As per the given data, we have:T = 5 secondsR = 12 ohmsC = ? (Unknown)

So, let's calculate the capacitance that will allow the light to stay on for 5 seconds. The formula for the time constant is given by: T = R * C or C = T / R. Put the given values in the formula, we get:  C = T / RC = T / R = 5 / 12C = 0.4166666666666667 F. Since the T value is around 4 time periods for a total of 5 seconds, the C value should be divided by 4.Therefore, the Capacitance that will allow the light to stay on for 5 seconds is C = 0.4166666666666667 F.

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The answer is A: when it wants to speed up, slow down or turn.

Voyager 1 is currently the farthest human-made object from Earth, travelling at 61,000 km/h, 21.7 billion km away. Once it is far from any large planets or stars,

when must it fire its rocket engines?

The answer is A: when it wants to speed up, slow down or turn. Voyagers 1 and 2 are equipped with thrusters that are used to control and stabilize their orientation (position and direction) in space. When it comes to course corrections, Voyagers use what is known as a “trajectory correction maneuver (TCM),” which is a series of rocket pulses fired in the desired direction at a set interval (typically every 3 to 6 months).

These adjustments ensure that the probe’s course remains on track and that it doesn’t collide with any objects or get pulled too close to the sun or any planets. Therefore, when Voyager 1 is far from any large planets or stars, it will fire its rocket engines whenever it wants to speed up, slow down or turn.

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The solution is as follows:

(a) The frequency of the motion:

Frequency f can be determined by using the formula below:

f = 1/T where T is the period of oscillation.

Substituting the value of T in the above equation f = 1/T = 1/0.15s = 6.89Hz

Therefore, the frequency of the motion is 6.89Hz.

(b) The period:

Period can be determined using the following formula:

T = 2π √(m/k)

Substituting the values of m and k in the above equation T= 2π √(2.4/4500) = 0.15s

Therefore, the period of the motion is 0.15s.

(c) The amplitude:

Amplitude A is given to be 10cm = 0.1m

Therefore, the amplitude of the motion is 0.1m.

(d) The maximum speed:

The maximum speed of an oscillating object is equal to the amplitude times the frequency.

vmax = A f = (0.1m) × (6.89Hz) = 4.3m/s

Therefore, the maximum speed of the object is 4.3m/s.

(e) The maximum acceleration:

The maximum acceleration is equal to the amplitude times the square of the frequency.

amax = A f² = (0.1m) × (6.89Hz)² = 190m/s²

Therefore, the maximum acceleration is 190m/s².

(b) When does the object first reach its equilibrium position?

What is its acceleration at this time?

The time required by the object to reach its equilibrium position can be calculated using the formula below.

t = 0.5T = 0.5 × 0.15s = 0.075s

The acceleration of the object at this time can be determined using the following formula:

a = -ω² x

where x is the displacement of the object from its equilibrium position.

Substituting the values of ω and x in the above equation,

a = -[(2πf)²]x

= -[(2π × 6.89Hz)²](0.1m)

= -190m/s²

Therefore, the acceleration of the object when it reaches its equilibrium position is -190m/s².

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The elevation of point A is 15.945 km and the elevation of point B is 14.715 km

The formula used in solving the problem is given below:

h = R[2ga/G - 1]

Where

h = elevation

R = radius of Earth

ga = gravitational acceleration at A or B in m/s2

G = gravitational constant

The values of ga are

ga = 9.8013 m/s² at point A

ga = 9.7996 m/s² at point B.

Substituting these values into the formula gives the elevation

hA = R[2(9.8013)/9.8067 - 1]

    = R[1.0025 - 1]

    = R(0.0025)

hB = R[2(9.7996)/9.8067 - 1]

     = R[1.0023 - 1]

     = R(0.0023)

Thus the elevation of point A is 6378 km x 0.0025 = 15.945 km.

The elevation of point B is 6378 km x 0.0023 = 14.715 km (rounded to 3 decimal places).

Therefore, the elevation of point A is 15.945 km and the elevation of point B is 14.715 km (rounded to 3 decimal places).

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The n-mesons would live approximately 4.63 × [tex]10^{-8[/tex] seconds as viewed in a laboratory.

To calculate the lifetime of n-mesons as viewed in a laboratory, we need to take into account time dilation caused by relativistic effects. The time dilation factor is given by the Lorentz transformation:

γ = 1 / [tex]\sqrt{1 - (v^2 / c^2)}[/tex]

where γ is the Lorentz factor, v is the velocity of the n-mesons, and c is the speed of light in a vacuum.

In this case, the velocity of the n-mesons is given as 2.4 × [tex]10^8[/tex] m/s, and the speed of light is approximately 3 × [tex]10^8[/tex] m/s. Let's calculate the Lorentz factor:

γ = 1 / √(1 - (2.4 × 10⁸)² / (3 × 10⁸)²)

[tex]=1 / \sqrt{1 - 5.76/9}\\=1 / \sqrt{1 - 0.64}\\= 1 / \sqrt{0.36}\\= 1 / 0.6\\= 1.67[/tex]

Now we can calculate the lifetime of the n-mesons as viewed in the laboratory using the time dilation formula:

t_lab = γ * t_rest

where t_lab is the lifetime as viewed in the laboratory and t_rest is the lifetime when at rest relative to an observer.

Given that [tex]t_{rest} = 2.78 * 10^{-8} s[/tex], we can calculate the lifetime as viewed in the laboratory:

[tex]t_{lab} = 1.67 * 2.78 * 10^{-8[/tex]

≈ 4.63 × [tex]10^{-8[/tex] s

Therefore, the n-mesons would live approximately 4.63 × [tex]10^{-8[/tex] seconds as viewed in a laboratory.

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