How does incident light that falls on an object affect the motion of electrons in the atoms of the object?

Physics

1 answer:

KonstantinChe [14]3 years ago

5 0

Explanation:

Incident light makes an electron oscillate. The electrons emit light or absorb the light, collide with other electrons, thereby converting light energy to more internal energy. and convert it to heat.

Light wave of a given frequency is incident on a material with electrons having the same vibrational frequencies, then electrons absorb the energy of the light wave and transform it into vibrational motion.

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A sound wave has a frequency of 250 Hz and a wavelength of 2.5 m. What is the speed of the wave?

Digiron [165]

ANSWER

625 m/s

EXPLANATION

Given:

• The frequency of the sound wave, f = 250 Hz

• The wavelength, λ = 2.5 m

Find:

• The speed of the wave, v

The speed of a wave of wavelength λ and frequency f is given by,

$v=f\cdot\lambda$

Substitute the known values and solve,

$v=250Hz\cdot2.5m=625m/s$

Hence, the speed of the wave is 625 m/s.

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Lapatulllka [165]

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If an object accelerates from rest, with a constant of 8 m/s2, what will its velocity be after 35s?

AlladinOne [14]

Answer:

Its speed will be 280 m/s

Explanation:

Constant Acceleration Motion

It's a type of motion in which the speed of an object changes by an equal amount in every equal period of time.

If a is the constant acceleration, vo the initial speed, vf the final speed, and t the time, vf can be calculated as:

$v_f=v_o+at$