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180° or π Radians is the smallest phase difference possible When two coherent waves combine destructively to create a minimum

Two waves of the same wavelength that are entirely out of phase with one another might cancel one another out or interact negatively. When there is a 180 degree or larger radian phase difference, this happens. Only when the two waves have the same amplitude do they completely cancel out. Partially destructive superposition occurs when two waves that are entirely out of phase yet have different amplitudes. The intensity is 0.

Superposition is the phenomenon in which the combined displacement of two combining waves is equal to their vector sum.

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Given data

*The given distance above the water is s = 8.40 m

*The given initial speed of the Olympic diver is u = 1.2 m/s

*The value of the acceleration due to gravity is a = 9.8 m/s^2

The formula for the diver speed, in m/s, just before she enters the water is given by the equation of motion as

Substitute the known values in the above expression as

Hence, the diver speed, in m/s, just before she enters the water is v = 12.88 m/s

Answer:

21.6

Explanation:

bc acceleration is equal to 108 times 0.2

Answer:               6,857.14m/h        (6.86km/h or 1.90m/s)

Explanation:

Answer:

gravity

Explanation:

The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.

Answer:

I think it is C

Explanation:

Answer:

C. 20 cm x 80 cm

Explanation:

The dimensions of the scale model have the same ratio of the original dimensions. The ratio of the original dimenstions is

240/60 = 4

Then, the ratio for each option is

A. 360/90 = 4

B. 3/1 = 3

C. 80/20 = 4

D. 480/120 = 4

Therefore, B is not a correct option.

Additionally, we don't use A because the units for length and width are different

And we don't use D because the measures are too long for a model.

Therefore, the answer is

C. 20 cm x 80 cm

In the early afternoon or high in the sky around the time, the sun is setting.

The crescent moon rises around noon and sets around midnight. It can be seen near the horizon in the evening or high in the sky as the sun sets. If you live in the northern hemisphere, the first quarter moon appears as the right half of the illuminated surface. Occurs when the moon is at right angles to the sun as seen from Earth.

The right half of the moon appears bright and the left half appears dark. During the period from the new moon to the first quarter moon, the illuminated part of the moon grows larger day by day and continues to grow until the full moon. The first quarter is also called the crescent moon because 50% of its surface is briefly illuminated by the sun. Usually, he takes 3 nights. Each phase of the moon has a profound effect on humans and the earth.

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The mass of the second skater is equal to 27 Kg, which acquires a speed of 3.81 m/s.

According to the law of conservation of momentum, the sum of the momentum of the two objects before and after the collision must be equal.

m₁ u₁ + m₂u₂ = m₁ v₁ + m₂ v₂

where m₁ and m₂ is the mass of the collided bodies, u₁ and u₂ are the initial speed while v₁ & v₂ is their final speed.

The linear momentum can be described as the product of the mass times the velocity of the object. Conservation of momentum is a characteristic held by an object where the total amount of momentum remains the same.

Given the initial speed of the skaters is equal to zero so  u₁ = u₂ =0

The mass of the one skater, m₁ = 49 Kg

The first skater acquires the speed, v₁ = 2.10 m/s

The speed acquired by the second skater, v₂ = -3.81 m/s

From the law of conservation of momentum, we can find the mass of another skater:

m₁ u₁ + m₂ u₂ = m₁v₁ + m₂ v₂

49 × 0 + m₂ ×0 = 49 × (2.10) + m₂ × (- 3.81)

m₂ = -49 × (2.10)/ (- 3.81)

m₂ = 27 Kg

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Based on the graph, during the periods 1800-1850 and 1900-1950, there was a increase in global temperature.

Sunspots is an activity on the surface of the Sun that manifest as transient, darker-than-the-neighboring-areas spots. These parts on which it occurs have lower surface temperatures because magnetic flux concentrations there prevent convection from occurring.

Sunspot can increase the temperature of earth but by only a margin of about 0.05 to 0.1 Celsius.

As we can see from the graph that during the year 1800-1850 and 1900-1950 that number of sunspots is increasing continuously. So, there will a slight increase will be noticed in the global temperature.

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Answer:

AM - amplitude modulation

FM - frequency modulation

The charge of a proton is 2.3 X 10^-22 N. Option C.

The force between two protons is the electrostatic repulsion. The electrostatic force is the force that develops between electric charges. This is called the strong nuclear force. It is one of the basic strengths. The amount of strong nuclear force acting between two protons is the same as the amount of strong nuclear force acting between two neutrons.

The nuclear force is the force acting between the protons and neutrons of an atom. The nuclear force is the force that binds protons and neutrons within the nucleus. This force can exist between protons and protons neutrons and protons or neutrons and neutrons. This force holds the core together. nuclear power. Nuclear forces act between all particles in the nucleus between two neutrons between two protons and between neutrons and protons.

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Acceleration = Change in Velocity / Time Interval

So,

A=15/10

A=1.5m/s.

Acceleration is defined as the rate of change of velocity over time. Acceleration is a vector quantity because it has both magnitude and direction. It is also the second derivative of position with respect to time or the first derivative of velocity with respect to time. Acceleration is the name we give to the process of changing velocity. Because speed is speed and direction.

There are only two ways to accelerate. Either change speed change direction or change both. Acceleration is the rate of change of velocity. At any point in the orbit, the magnitude of the acceleration is given by the rate of change of magnitude and direction of velocity at that point. Velocity is the primary measure of object position and velocity. It can be defined as the distance traveled by an object in a unit of time.

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The velocity and acceleration of the marble will be greater when it travels 1.5 m compared to 0.5 m.

The velocity of an object is the rate of change of displacement with time.

The velocity of the marble after it has travelled the given distance is calculated as follows;

v² = u² + 2as

where;

Assuming the marble started from rest, without initial velocity, our final equation becomes.

v² = 0² + 2as

v² = 2as

v = √2as

From the final equation, the velocity of the marble increases with increase in the distance travelled by the marble.

Also, since acceleration is defined as the rate of change of velocity with time. As the velocity increases, the acceleration of the marble increases as well.

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Newton's Second Law.

We have the following data, provided in the exercise:

Mass (m) = ?

Force (F) = 13607 N

Acceleration (a) = 2.9 m/s²

To calculate the mass, we solve the following formula:

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{F=m*a \ \ < ====Formula \ clear==== > \ \frac{F}{a}=\frac{m*\not{a}}{\not{a}} } \end{gathered}$}}[/tex][tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\frac{F}{a}=m \ \iff \ Address \ is \ changed \Rightarrow \ m=\frac{F}{a} } \end{gathered}$}}[/tex]

We substitute the data in the clear formula.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{13607 \ N}{2.9 \ \frac{m}{s^{2} } } } \end{gathered}$} }[/tex]

We break down the units of Newton = Kg * m/s².

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=\frac{13607 \ Kg*\not{\frac{m}{s^{2}} } }{2.9 \not{\frac{m}{s^{2}} } } } \end{gathered}$} }[/tex]

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{m=4692.07 \ Kg } \end{gathered}$} }[/tex]

ANSWER

EXPLANATION

First, we have to find the acceleration of the bicyclist.

To do that, we apply the formula:

where u = initial velocity

v = final velocity

t = time

Let us convert the speed given to feet per second. To do that, multiply the speed by 1.46667:

The bicyclist started from rest, so the initial speed is 0 ft/s.

Therefore, the acceleration is:

Now, to find the distance traveled, apply the formula:

Therefore, the distance traveled is:

From the Law of Conservation of Linear Momentum, when two particles get stuck together after a collision, it follows that:

In this case, the initial velocity of the second particle is unknown. Isolate it from the equation:

Replace the given data to find the value of v₂:

Therefore, the initial velocity of the 26-kg car is approximately 2.3m/s.

For parallel plate capacitors the capacitance C=Aϵ0/d

dAϵ 0

​Area, A ​Cd/ ϵ0 = 1 * 1×[tex]10^{-3}[/tex]/8.85× [tex]10^{-12}[/tex]

= 1.13×10 8 m 2.

The capacitance depending on geometry is given by the formula C=ϵ⋅Ad C = ϵAd. where C is the capacitance value A is the area of ​​each plate, and d is the distance between the plates. plates, and ϵ is the dielectric constant of the material between the plates of the parallel capacitor.

The governing equations for capacitor design are C = εA/d where C is the capacitance. ε is the permittivity, a term that describes how well a dielectric holds an electric field. A is the area of ​​the parallel plates. d is the distance between the two conductive plates. This is shown below. To calculate the total capacitance of multiple capacitors connected in this way, sum the individual capacitances.

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Answer:

The mass of the water is greater than the combined mass of the two gases

Aristotle's rhetorical triangle tells us that effective messages show awareness of ethos, pathos, and logos. The correct answer to the question is option A.

What is Aristotle's rhetorical triangle?

Aristotle taught that a speaker's effective messages show awareness of the ethos, pathos, logos triangle, which expresses the idea that a good argument must be ethically, emotionally, and logically sound.

In summary, Aristotle's rhetorical triangle shows that the Logos, Ethos, and Pathos are very important when giving an effective message.

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The lowest height at which speaker B can be placed above speaker A to produce the lowest sound to the person standing in front of A by superposition and wave interference is ∆y ≈ 2.41 m.

The superposition principle states that the magnitude of the resulting wave when two waves overlap is the sum of the disturbance of the individual waves.

The given parameters are;

Height of speaker B above speaker A = ∆y

Wavelength of the wave = 0.880 meters

Distance between the person standing directly in front of speaker A and speaker A, ∆x = 6.38 meters

Required;

The minimum height of speaker B above speaker A that produces the minimum sound to the person in front of speaker A

Solution;

The minimum sound is given when there is destructive interference of the waves produced by the speakers

When there is destructive interference, the peak of the wave from speaker A coincides with the through of the wave from speaker B which gives;

Distance between a peak and the through of a wave = 0.5 × The wavelength

Therefore, for minimum sound, we have;

Distance from the person to speaker B = 6.38 m + 0.5 × (The wavelength)

Which gives;

Distance from the person to speaker B = 6.38 m + 0.5 × 0.88 m = 6.82 m

Pythagorean theorem is used to find the height of speaker B above speaker A as; ∆y = √(6.82² - 6.38²) ≈ 2.41

The height of speaker B above A is approximately 2.41 meters

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The lowest height that Speaker B can be placed above Speaker A to produce a minimum of sound heard by a person standing Δx=6.38 meters directly in front of Speaker A is

[tex]\Delta y=1.62m[/tex]

This is further explained below.

Generally, For a person, to hear sound minimum, sound waves from speakers A and B should meet at point P, in opposite phases, so path diff. should be

[tex]x=(2 n+1) \frac{\lambda}{2},[/tex]

[tex]\lambda[/tex]= wavelength

[tex]for $\Delta y$ to be minimum $\Rightarrow x=\frac{\lambda}{2}$ \\\\from figure, in $\triangle A B P$$$\Delta x^2+\Delta y^2=\Delta x^{\prime 2}=\text { (2) }$$[/tex]

Path diff. will be x=B P-A P

[tex]\begin{aligned}& \quad x=\Delta x^{\prime}-\Delta x \\\\&\Delta x^{\prime}-\Delta x=\frac{\lambda}{2} \quad x=\frac{\lambda}{2} \quad \text { from eq (1) } \\\\&\left.\Delta x^2+\Delta y^2-3.01=0.41 \quad \quad \quad \quad \lambda=0.820 \mathrm{~m}\right] \\\\&\Delta x^2+\Delta y^2=3.42 \\\\&\Delta y^2=(3.42)^2-(3.01)^2 \quad \Delta x=3.01 \mathrm{~m} \\\\&\Delta y=1.62 \mathrm{~m}\end{aligned}[/tex]

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When lifting an object we are required to produce a force that is greater or equal than the weight of the object in order to be lifted:

When we use a ramp we have the following distribution of forces:

In the ramp, the force decomposes into two components. A component that is parallel to the ramp and a component that is perpendicular to the ramp. Now the force must be greater or equal to the parallel component of the ramp therefore, the amount of force required must be less. Therefore, the ramp makes it easier by decreasing the amount of force required to move the object.

Objects, especially simple machines, make work easier. They do not decrease the amount of work done, but actually decrease the amount of force applied. The less force applied, the easier it is to do work. Simple machines and other objects that help make work easier decrease the amount of force required to move an object.

So the answer is-

A ramp makes work easier by decreasing the amount of force required to move an object

As the buoyant force balances the weight of the object.

Thus, there is no motion of the object in the vertical direction.

Whereas, the force acting on the object towards the right is more than the drag force.

Thus, the net force acting on the object along the horizontal direction is,

Substituting the known values,

According to Newton's second law, the net force acting on the object in terms of the acceleration of the object is,

where m is the mass, and a is the acceleration,

Substituting the known values,

Thus, the acceleration of the object is 2.5 meters per second.

H

The wavelength of the monochromatic beam is given as,

The value of the width of the slit is,

The distance of the slit from the screen is,

Thus, the distance of the dark band from the center is,

For the first dark band,

m=0,

Substituting all the known values,

The value of the distance of the dark band becomes,

Thus, the first dark band is 5.4 mm away from the center of the screen.

Hence, the correct answer is 5.4 mm.

The blades on the turbines transform the energy coming from the wind into rotational kinetic energy.

The blades convert wind energy into rotational energy.

The average velocity of Alyse is 0 m/s.

The average velocity of a person is the average of all the velocities of moving as it moves.

Velocity on its own is the ratio of the displacement of a body and the time taken for that displacement.

Mathematically:

Displacement is a vector quantity that measures the distance traveled by a moving body in a specific direction.

Hence, average velocity and velocity are both vector quantities.

Displacement takes a measure of the shortest possible distance along a straight line from the beginning of the motion until the end of the motion.

Calculating the average velocity of Alyse:

Assuming the initial direction is positive and n=backeard direction is negative:

Total displacement = 20 m + - (20 m)

Total displacement = 0 m

total time = 3 minutes

Average velocity = 0 m/ 3

Average velocity = 0 m/s

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Answer:

Correct option is B)

Given, initial velocity is u=0m/s

Final velocity is v=88.3m/s and traveled distance, d=1365m

Let a be the acceleration of the plane.

Using v

2

−u

2

=2ad

∴ (88.3)

2

−0

2

=2a(1365)

⟹ a=2.86m/s

2

Solve any question of Motion in a Straight Line with:-

Explanation:

hope it helps

To solve this we must be knowing each and every concept related to acceleration. Therefore, the correct option is option B. The acceleration of the plane during its landing is 2.86m/s².

Acceleration is the rate during which velocity varies over time, both in terms of speed and direction. A point or object travelling in a straight path is accelerated if something accelerates or decelerates.

Regardless of whether the speed remains constant, motion on such a circle gets accelerated because of direction is always changing. Both tangential to acceleration in all other types of motion.

initial velocity u=0m/s

Final velocity  v=88.3m/s

distance, d=1365m

v²-u²=2as

substituting all the given values in the above equation, we get

88.3²-0²=2×1365×a

a=2.86m/s²

Therefore, the correct option is option B. The acceleration of the plane during its landing is 2.86m/s².

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The slope of the graph current vs voltage can be explained with the next

In this case, current vs voltage means that current is y axis, and voltage is x axis. Based n that, the equation is the second one

And the slope is the inverse of the resistance. Dont forget that current - voltage is different to voltage - current

Answer:

Explanation:

Given:

F₁ = 500 N

F₂ = 1.500 N

____________

L₁ - ?

L₂ - ?

Moment rule:

M₁ = M₂

F₁*L₁ = F₂*L₂

F₂ / F₁ = 1.500 / 500 = 3

L₁ / L₂ = 3

L₁ = 3*L₂

If  L₂ = 0.5 m

then L₁ = 3*0.5 = 1.5 m