2 years ago

What happens to a day of light that slows down when it hits a new medium at an angle

1 answer:

4 0

Light travels as transverse waves and faster than sound. It can be reflected, refracted and dispersed. Ray diagrams show what happens to light in mirrors and lenses. Eyes and cameras detect light.

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Nadusha1986 [10]

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2 years ago

Please help!!~

lisov135 [29]

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Explanation: hope this helps :)

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A ball is thrown horizontally from the top of a building 21.8 m high. The ball strikes the ground at a point 101 m from the base

riadik2000 [5.3K]

Answer:

t=2.10 s

u= 47.40 m/s

Explanation:

given that

h= 21.8 m

x= 101 m

g=9.8 m/s²

Lets take horizontal speed of ball = u m/s

The vertical speed of the car at initial condition is zero ( v= 0).

We know that

$h=vt+\dfrac{1}{2}gt^2$

v= 0 m/s

$h=\dfrac{1}{2}gt^2$

now by putting the values

21.8 = 1/2 x 9.8 x t²

t=2.10 s

This is time when ball was in motion.

Now in horizontal direction

x = u .t

101 = u x 2.1

u= 47.40 m/s

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2 years ago

The cooling effect inside a refrigerator is produced by

nlexa [21]

Actually, when the refrigeration liquid is vaporized, the cooling effect is produced

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2 years ago