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nirvana33 [79]
3 years ago
12

Two bodies, one hot and one cold, are kept in vacuum. What will happen to the temperature of the hot body after some time?

Physics
1 answer:
SVETLANKA909090 [29]3 years ago
4 0

Answer:

vacuum have no air. so, the hot body will remain unchanged in temperature

Explanation:

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A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. The mass of the ball is 0.38 kg The ball
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Answer:

Force is 432.94 N along the rebound direction of ball.

Explanation:

Force is rate of change of momentum.

\texttt{Force}=\frac{\texttt{Final momentum-Initial momentum}}{\texttt{Time}}

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\texttt{Force}=\frac{\texttt{Final momentum-Initial momentum}}{\texttt{Time}}=\frac{-1.472}{3.40\times 10^{-3}}\\\\\texttt{Force}=-432.94N

Force is 432.94 N along the rebound direction of ball.

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As we know that power is defined as rate of work done

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