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Rufina [12.5K]
3 years ago
12

State whether the light from an object moving towards us will be red shifted or blue shifted and explain why.

Physics
1 answer:
denis23 [38]3 years ago
3 0

Answer:

The light from an object which is coming towards us will be blue shifted.

Explanation:

According to the Doppler effect the movement of the source towards the observer will lead to increase in thew apparent frequency by the Doppler formula,

f'=\frac{c+v_{o} }{c-v_{s} }f

Now when the there is increase in frequency then the wavelength is decrease because it is inversely related to frequency.

The wavelength of blue shift is lies in the range of 450-490 nm and the wavelength of red shift lies in the region of 635-700 nm.

Therefore, decrease in the wavelength will lead to blue shift.

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ss7ja [257]
Hello friend!!

We know that kinetic energy is the energy possessed due to the motion of the object. And we know if the object is in a fast motion then the temperature would be high, whereas if the object is slow in motion then it will have lower temperature. So we know that the kinetic energy is indirectly related to temperature.From our knowledge we can conclude that HIGHER THE TEMPERATURE, HIGHER THE KINETIC ENERGY and LOWER THE TEMPERATURE, LOWER THE KINETIC ENERGY.
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3 years ago
Bob is pulling a 30 kg filing cabinet with a force of 200 N , but the filing cabinet refuses to move. The coefficient of static
Arada [10]

Answer:

<em>Magnitude of the Frictional force is 200 N</em>

Explanation:

The frictional force is the force that tries to oppose relative motion between two surfaces that are contacting. The coefficient of static friction is the coefficient of friction of a body that is not moving.

Newton's third law of motion states that action and reaction forces are equal and opposite. So the frictional force felt on the filing cabinet will be equal to the applied force pulling the cabinet.

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4 years ago
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B. Impedes the flow of electrons

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Why does magma rise from depth to the surface of the earth?
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Answer

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the overlying rock creates pressure which forces the magma to be directed upward.

Explanation:

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