Physics
A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground.

0.042361111111111
Cannot be found from the given information.
0.044444444444444
0.043055555555556

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Physics
The law of conservation of energy states that

Energy can neither be created nor destroyed
Energy can either be created or destroyed
Energy can neither be created or destroyed
Energy can either be created nor destroyed

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Physics
X-rays region lies between

Short radio waves and long radio waves
Visible and infra-red region
Ultraviolet and visible region
Gamma-rays and ultraviolet region

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