3 years ago

What happens when you drop a penny from a height of 20 meters

Physics

1 answer:

Jet001 [13]3 years ago

3 0

I'm not entirely sure but I believe that it will hit the ground and bounce back up

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Which of these is a mixture?

PSYCHO15rus [73]

Answer:

Air is a mixture.

Explanation:

Air is a homogeneous mixture. It is made up of gaseous substances such as nitrogen, oxygen, and smaller amounts of others.

Carbon dioxide is a pure substance, not a mixture.

Carbon is another pure substance, it cannot be separated into other substances.

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In one of the original Doppler experiments, a tuba was played at a frequency of 64.0 Hz on a moving flat train car, and a second

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Answer:

$f_{beat} = 1.64\ Hz$

Explanation:

given,

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$f' = f(\dfrac{v}{v-v_s})$

v_s is the velocity of the source

v is the speed of sound, v = 340 m/s

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I think b support body weight

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