3 years ago

Does water transmit light

1 answer:

3 0

While the answer is that it does, it transmits light VERY poorly. Most of the light bounces off it and the rest is refracted into the ocean. This is why you can't see much that is far away from you in the ocean unlike if you're just on land.

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An electron in an electron gun is accelerated from rest by a potential of 25 kV applied over a distance of 1 cm.

podryga [215]

Answer:

$9.38\times 10^7 m/s$

Explanation:

We are given that

Potential ,V=25 kV= $25\times 10^3 V$

Distance,r =1 cm= $\frac{1}{100}=0.01 m$

1 m=100 cm

Mass of electron, m= $9.1\times 10^{-31} kg$

Charge, q= $1.6\times 10^{-19} C$

We have to find the final velocity of the electron.

Speed of electron, $v=\sqrt{\frac{2qV}{m}}$

Using the formula

$v=\sqrt{\frac{2\times 1.6\times 10^{-19}\times 25\times 10^3}{9.1\times 10^{-31}}$

v= $9.38\times 10^7 m/s$

Hence, the final velocity of the electron= $9.38\times 10^7 m/s$

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Acceleration is calculated by taking the change in velocity and dividing by the time. What is the

netineya [11]

Answer:

m/s/s

Explanation:

Acceleration is change in velocity over time.

a = Δv / t

a = [m/s] / [s]

a = [m/s/s]

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3 years ago

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