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viva [34]
2 years ago
8

An athletes heart beats 62 times per minute. What is the frequency of her heart beat?

Physics
1 answer:
PilotLPTM [1.2K]2 years ago
8 0

Answer:

22

Explanation:

bc it just is

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What is the kinetic energy of a hammer that starts from rest and decreases its potential energy by 10 kJ?
erma4kov [3.2K]

Answer:

final kinetic energy of the hammer is 10 kJ

Explanation:

As we know that there is no non conservative force on the system

So here we can use the theory of mechanical energy conservation

So we will have

\Delta K + \Delta U = 0

here we know that

\Delta U = - 10 kJ

from above expression now

K_f - K_i - 10 kJ = 0

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so final kinetic energy of the hammer is 10 kJ

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3 years ago
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Answer:

It's called an ampere!

Explanation:

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