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3 years ago

10

Does the speed of light in air depends on wavelength and light frequency?

2 answers:

vitfil [10]3 years ago

7 0

The speed of light in air does not depend on wavelength and light frequency. The speed of liht is a universal constant and is approximated to be 299,792,458 meters per second.

Akimi4 [234]3 years ago

4 0

The wavelength does affect the speed of light. The wavelength travels slower in the air because particles are scattered all over. Refraction also plays an important role in the speed of light. Refraction is the act of bending of particles as they enter into a medium.

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1) The distance travelled by the electron is $1\cdot 10^{17} m$

2) The time taken is $4.0\cdot 10^{10}s$

Explanation:

1)

The electron in this problem is moving by uniformly accelerated motion (constant acceleration), so we can use the following suvat equation

$v^2-u^2=2as$

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance travelled

For the electron in this problem,

$u=5\cdot 10^6 m/s$ is the initial velocity

v = 0 is the final velocity (it comes to a stop)

$a=-1.25\cdot 10^{-4} m/s^2$ is the acceleration

Solving for s, we find the distance travelled:

$s=\frac{v^2-u^2}{2a}=\frac{0-(5\cdot 10^6)^2}{2(-1.25\cdot 10^{-4})}=1\cdot 10^{17} m$

2)

The total time taken for the electron in its motion can also be found by using another suvat equation:

$v=u+at$

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time taken

Here we have

$u=5\cdot 10^6 m/s$

v = 0

$a=-1.25\cdot 10^{-4} m/s^2$

And solving for t, we find the time taken:

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Learn more about accelerated motion:

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A roller coaster is at the top of a 102 m hill and a mass of 120 kg. The coaster (at this

dybincka [34]

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P E means potential energy

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3 years ago

Two 100kg bumper cars are moving towards eachother in oppisite directions. Car A is moving at 8 m/s and Car B at -10 m/s when th

DerKrebs [107]

Answer:

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