Water is formed when two hydrogen atoms bond to an oxegyn atom. When a substance is made of two or more atoms like this we call it

Answer:

0.026 V

Explanation:

Given that,

Inductance of the coil, L = 6 mH

The current changes from 0.2 A to 1.5 A in a time interval of 0.3 s

We need to find the magnitude of the average induced emf in the coil during this time interval. The formula for the induced emf is given by :

[tex]\epsilon=L\dfrac{dI}{dt}\\\\=6\times 10^{-3}\times \dfrac{1.5-0.2}{0.3}\\\\=0.026\ V[/tex]

So, the magnitude of induced emf is 0.026 volts.

Answer:

3.07 m/s

Explanation:

Given:

The acceleration of its center of mass will be:

= [tex]\frac{2}{3}g Sin \Theta[/tex]

By putting the above given values, we get

= [tex]\frac{2}{3}\times 9.8 Sin 28^{\circ}[/tex]

= [tex]\frac{2}{3}\times 9.8\times 0.46[/tex]

= [tex]\frac{9.0167}{3}[/tex]

= [tex]3.07 \ m/s^2[/tex]

Thus the solution above is appropriate.

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Answer:

Explanation:

A common emitter amplifier works by inverting. It does have low input impedance. Despite its low input impedance, it poses an otherwise high output impedance.

The common base circuit performs optimally when it acts as a current buffer. It has the ability to take an input current at a low input impedance, and transmit almost the same current to an impedance with a higher output

The primary benefit of emitter follower amplifier is that the transistor is able to provide current and power gain. Although this transistor takes in little current from the input. It still provides an impedance with a low output to a circuit by exercising the output of the follower. This then translates to that the output under load not dropping.

Answer:

A) 1.96 * 10^-8 J

B) 2.55 * 10^-7 m

Explanation:

A) calculate the kinetic energy in eV of the recoiling Cs atom

we have to apply the principle of energy conservation and momentum

Initial kinetic energy of electron = 16 eV = 16 * (1.6 * 10^-19 ) J

Initial kinetic energy of atom = 0

therefore the final kinetic energy after collision ( E )

= [ 16 * ( 1.6 * 10^-19 ) ] + 0

= 1.96 * 10^-8 J

B) Determine the wavelength of the ultraviolet radiation

accelerating Voltage = 4.87 V

K.E = eV = 1.6 * 10^-19 * 4.87

next we will apply Planck's relationship

[tex]\frac{hc}{w} = KE[/tex]  ---------  ( 1 )

w = wavelength

h = 6.64 * 10^-34 J-S ( Planck's constant )

c = 3 * 10 ^8 m/sec  ( speed of light )

KE = 1.6 * 10^-19 * 4.87

substitute given values into equation 1 above

w ( wavelength ) =  2.55 * 10^-7 m

Answer:

d. an oceanic plate subducted at a low angle beneath the continent

Explanation:

The tectonic event in the western U.S. caused magmatism and deformation to move farther into the continent during the late Mesozoic and early Cenozoic Laramide Orogeny is as a result of an oceanic plate being subducted at a low angle beneath the continent.

Due to the oceanic plate being at a low angle underneath the continent it favoured the release of molten magma.

Answer:

metal

Explanation:

metal heats up the fastest when near a hot source

Answer:

T1 = 417.48N

T2 = 361.54N

T3 = 208.74N

Explanation:

Using the sin rule to fine the tension in the strings;

Given

amass = 42.6kg

Weight = 42.6 * 9.8 = 417.48N

The third angle will be 180-(60+30)= 90 degrees

Using the sine rule

W/Sin 90 = T3/sin 30 = T2/sin 60

Get T3;

W/Sin 90 = T3/sin 30

417.48/1 = T3/sin30

T3 = 417.48sin30

T3 = 417.48(0.5)

T3 = 208.74N

Also;

W/sin90 = T2/sin 60

417.48/1 = T2/sin60

T2 = 417.48sin60

T2 = 417.48(0.8660)

T2 = 361.54N

The Tension T1 = Weight of the object = 417.48N

Answer:

a)  Fermi level = 600 electron-volts

b) [tex]\frac{2.04 * 10^{13} }{\sqrt{E} }[/tex]

Explanation:

Given data:

length of one-dimensional crystal = 10 um

Lattice spacing = 0.1 nm

A) Determine the Fermi level assuming one electron per atom

Total length = 10 um

Interatomic separation of a = 0.1 nm

in this case the Atom has one electron therefore the number of electrons = 10^5  and the number of states Ns = gsN = 2 * 10^5  ( attached below is some part of the solution )

hence : Fermi level = 600 electron-volts

B) Determine the density of states as a function of electron energy

attached below is the detailed solution

Answer:

A

A

D

D

when the pendulum is at the lefend and right end.

0 because kinetic energy is only formed when a moving object is moving.

dont know the others sorry

Explanation:

i got about half way for you hope it correct

give me nothing if you got some wrong!

or just give me a message saying that i didn't help

Answer:

a.) O.3A and 0.15A

b.) P1 = 36W, P2 = 18W

c.) 54W

Explanation:

Constant resistance R1 = 400 ohms, R2 = 800 ohms

a.)

The current through each bulb

While in parallel.

I = 120/800/3

= 0.45A

For 400= 800/400+800

= 800/1200 x 0.45

= 0.3A

I-800 = 400 /400+800

= 400/1200*0.45

= 0.15A

B.)

The power dissipated in each bulb

P409 = I²400r

= 0.3A²x400 ohms

= 36 W

P800 = I²800R

= 0.15A²*800 ohms

= 18W

C.)

The total power dissipated

= 36W + 18 W

= 54W

Answer:

The final velocity is [tex]u_f = 3.44 \ m/s[/tex]

Explanation:

From the question we are told that

    The mass of the child is  [tex]m_1 = 20 \ kg[/tex]

    The initial  speed  of the child is  [tex]u_1 = 3.3 \ m/s[/tex]

    The mass of the wagon is  [tex]m_w = 4.0 \ kg[/tex]

    The  initial  speed of the wagon is [tex]u_w = 3.3 \ m/s[/tex]

    The mass of the ball is  [tex]m_2 = 1.0 \ kg[/tex]

    The initial speed off the ball  is  [tex]u_2 = 3.3 \ m/s[/tex]

Generally the initial  speed of the system (i.e the child , wagon ,  ball) is  

          [tex]u_1 = u_w = u_2 = u =3.3 \ m/s[/tex]

Generally from the law of linear momentum conservation

    [tex]p_i = p_f[/tex]

Here [tex]p_i[/tex]  is the momentum of the system before the ball is dropped which is mathematically represented  as

      [tex]p_i = ( m_1 + m_2 + m_3 ) * u[/tex]

=>   [tex]p_i = ( 20 + 4 + 1 ) * 3.3[/tex]

=>   [tex]p_i = 82.5 \ kg \cdot m/s[/tex]

and  

       [tex]p_f[/tex]  is the momentum of the system after the ball is dropped which is mathematically represented  as  

       [tex]p_f = ( m_1 + m_w ) * u_f[/tex]

=>   [tex]p_i = ( 20 + 4 ) * u_f[/tex]

So

     [tex]82.5 = 24 * u_f[/tex]

=>   [tex]u_f = 3.44 \ m/s[/tex]

Answer:

7m because that is the height that the child can throw.

Answer:

a)[tex]y_{first}=5.3mm[/tex]

b)[tex]y_{second}=10.6-5.3 =5.3 mm[/tex]  

Explanation:

a)

The width of the central bright in this diffraction pattern is given by:

[tex]y=\frac{m\lambda D}{a}[/tex] when m is a natural number.

here:

So we have:

[tex]y_{first}=\frac{633*10^{9}*3.35}{0.0004}[/tex]

[tex]y_{first}=5.3mm[/tex]

b)

Now, if we do m=2 we can find the distance to the second minima.

[tex]y_{2}=\frac{2*633*10^{9}*3.35}{0.0004}[/tex]

[tex]y_{2}=10.6 mm[/tex]

Now we need to subtract these distance, to get the width of the first bright fringe :

[tex]y_{second}=10.6-5.3 =5.3 mm[/tex]    

I hope it heps you!

Answer:

219 scatterings

Explanation:

Given that:

The Coolant used In the liquid metal fast breed reactor = Sodium

The atomic weight (A) of sodium = 23

The initial energy [tex]E_{i}[/tex] = 2 - MeV

The final energy [tex]E_{f}[/tex] = 0.025 eV  (thermal energy)

The number of elastic neutron scatterings (n) needed to reach the given average thermal energy can be computed as:

[tex]n = \dfrac{log \bigg(\dfrac{E_f}{E_i} \bigg)}{log \bigg [ \dfrac{A^2+1}{(A+1)^2} \bigg]}[/tex]

[tex]n = \dfrac{log \bigg(\dfrac{0.025}{2 \times 10^6} \bigg)}{log \bigg [ \dfrac{23^2+1}{(23+1)^2} \bigg]}[/tex]

[tex]n = \dfrac{log \bigg(1.25\times 10^{-8} \bigg)}{log \bigg [ 0.92014\bigg]}[/tex]

[tex]n = 218.643[/tex]

n ≅ 219 scatterings

Answer:

c. equal to 760 mm

Explanation:

We are told that another mercury barometer is used that has a tube of larger diameter. This means a larger area and the weight of the liquid in the tube will have increased since volume = area × height. Also, due to the larger area, the net upward force on the mercury will have also increased by the same amount because force = area × pressure. Therefore, as long as the pressure remains the same, the height of the mercury will also remain the same.

Thus the height of the mercury = 760 mm

Answer:

The number of revolutions turned by the centrifuge is 8250 revolutions.

Explanation:

Given;

number of revolution per minutes, ω = 15000 rpm

time of  motion, t = 330 s = 5.5 minutes

The number of revolutions turned by the centrifuge is given by;

[tex]N = \frac{1500 \ Rev}{minutes} *5.5 \ minutes\\\\N = 8250 \ revolutions[/tex]

Therefore, the number of revolutions turned by the centrifuge is 8250 revolutions.

Answer:

there is no model shown

Explanation:

Therefore it can be thousands of different answers

The chain makes a circle of radius 1.3 m as it spins, so that 1 revolution of the hammer amounts to it moving a linear distance of 2π (1.3 m) = 2.6π m. Then the hammer's linear speed is

(1.64 rev/s) • (2.6π m/rev) = 4.264π m/s

and so the centripetal acceleration has magnitude

a = v²/r = (4.264π m/s)² / (1.3 m)

a ≈ 140 m/s²

Yes, a symptom of depression is a loss of appetite, and eating disorders are often developed as a result of an unhealthy coping mechanism with life; therefore, people with depression can get eating disorders and vice versa. They go hand in hand.

Answer:

c. 7.5 m/s south

Explanation:

Given the following data;

Velocity of duck = 10m/s due South

Velocity of wind = 2.5m/s

To find the resultant velocity;

Since we know that the duck is flying against a gust of wind, we would have to subtract the velocity of the gust of wind from that of the duck.

This ultimately implies that, the gust of wind (headwind) would decrease the resulting velocity of the duck because it approaches the duck from the front.

Resultant velocity, /V/ = 10 - 2.5

Resultant velocity, /V/ = 7.5m/s South.

Therefore, the resultant velocity of the duck is 7.5m/s south.

Answer:

Explanation:

When we go back and look at Kepler's third law. Kepler's third law states that "the square of the period is proportional to the cube of the semi-major axis of the orbit". P²µa³

where a is the semi-major axis of orbit,

P is the period of orbit

The orbit in question is the distance from the center of Earth. If the satellite spirals in as a result of air friction, then it decreases and, so does P.

Note that P = 2πa / V or Vµ1 / a0.5 .

From the formula, we can see that a decrease in the value of a, will lead to an Increase in the value of V.

Answer:

No because sugar is more sweet and it would not have the benefits of salt. Think of it like how people used to put salt on meat to preserve it. Would they put sugar on? No they would not because salt is a combination of things that sugar does not have.

Explanation

Answer:

V = 3.97 m/s

Explanation:

Mass of a man, M = 85 kg

Mass of a bullet, m = 8 g = 0.008 kg

Speed of bullet, v = 410 m/s

We need to find the speed of a man in order to have the same kinetic energy as that of the bullet. Let the kinetic energy of the bullet is k. So,

[tex]k=\dfrac{1}{2}mv^2\\\\k=\dfrac{1}{2}\times 0.008\times 410^2\\\\k=672.4\ J[/tex]

Since, k = K (K is the kinetic energy of the man and Let V is the speed)

[tex]K=\dfrac{1}{2}MV^2\\\\V=\sqrt{\dfrac{2K}{M}} \\\\V=\sqrt{\dfrac{2\times 672.4}{85}} \\\\V=3.97\ m/s[/tex]

So, the speed of the man is 3.97 m/s.

We have that for the Question "How fast would a(n) 85 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet fired at 410 m/s?" it can be said that the speed is

v=4.0m/s

From the question we are told

How fast would a(n) 85 kg man need to run in order to have the same kinetic energy as an 8.0 g bullet fired at 410 m/s?

Generally the equation for the kinetic energy  is mathematically given as

[tex]K.E=1/2*m*v^2\\\\Therefore\\\\K.E=1/2*0.008*(420)^2\\\\K.E=672.4J\\\\[/tex]

Therefore

[tex]v^2=\frac{672.4*2}{85}\\\\v^2=15.821[/tex]

v=4.0m/s

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Answer:

The first law states that a body at rest will stay at rest until a net external force acts upon it and that a body in motion will remain in motion at a constant velocity until acted on by a net external force. Inertia is the tendency of a body in motion to remain in motion.

Explanation:

Answer:

g=4.5727 m/s^2

Explanation:

[tex]We\ know\ that\ , \\F=G\frac{Mm}{d^2} \\As\ F=ma\ and\ a=g\ (g\ is\ the\ acceleration\ caused\ due\ to\ gravity),\\mg=G\frac{Mm}{d^2}\\Canceling\ m\ on\ both\ sides\ we\ get,\\g=G\frac{M}{d^2}\\[/tex]

[tex]We\ are\ given\ that\ ,\\Mass\ of\ the\ planet\ (M) = 4.76*10^{23} kg\\Distance(d) = 2,635,000 m\\G(Universal\ Gravitation\ Constant) = 6.67*10^{-11}\\Hence,\\g=6.67*10^{-11} (\frac{4.76*10^{23}}{2,635,000^2} )\\g= 4.5727 m/s^2[/tex]

Answer:

Polarizatión

Explanation:

Polarization is that property of waves that particular to transverse waves. Ir specifies the geometrical orientation of the oscillations. In transverse waves, the direction of the oscillation is often at perpendicular with respect to the direction of motion of the wave itself.

Again, it can be called the property of electromagnetic radiations to which the direction and magnitude of the vibrating electric field are related in a particular way.

Answer:

Atomic mass is a value that depends on the distribution of an element's isotopes in nature and the masses of those isotopes. Circle the letter of each sentence that is true about a carbon-12 atom. ... Most elements exist as a mixture of two or more isotopes.

So the answer is true.

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Explanation:

how can I help you that?

Answer:

B

Explanation:

on edge2020

Three minutes pass on the rocket as recorded by an observer on Earth will be more than three minutes because of time dilation. The correct option is B.

It is a phenomenon a slowing of time according to the theory of relativity when a system is in motion relative to an outside observer and that becomes apparent when the speed of the system approaches that of light is known as time dilatation.

The time dilation results in Three minutes passing on the rocket as recorded by an observer on earth will be more than three minutes.

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