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artcher [175]
3 years ago
15

A car of mass 2400kg moving at 20 m/s slams into a cement wall and comes to a halt?

Physics
1 answer:
Brut [27]3 years ago
7 0

Impulse = change in momentum

The car's momentum was (mass) x (speed)

Momentum = (2400 kg) x (20 m/s)

Momentum = 48,000 km-m/s

To completely stop the car, the impulse = -48,000 km-m/s .

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In a certain time interval, natural gas with energy content of 19000 J was piped into a house during a winter day. In the same t
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Answer:

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The equation form of thermodynamics is,

ΔQ=ΔU+W

Here, ΔQ is the heat transferred, ΔU is the change in internal energy, and W is the work done.

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​

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