Science, asked by babarrakesh5, 10 months ago


Q.8 a) Define power. Write S.l unit

b) An electric bulb is rated 10 W. what does it mean, what is the energy consumed in joules if it is used for 5 minutes.

Q.9 a) what is reverberation of sound?

b)Draw a diagram depicting low pitched and high pitched sound. Also w e we difference.

Q.10 a) when an athlete comes running from a distance, he is able to jump longer.Why

b)The velocity time graph of a bail of mass 20gm moving along a straight line on a
long table is given in figure. How much force does the table exert on the ball to bring it to the rest?​

Answers

Answered by bishtlaxmi006
1

Answer:

The amount of energy transferred per unit the amount of work done is called power and it's si unit is watt

Answered by jaiswalsindhuli717
1

Answer:8 a) The rate of doing work is called power.

OR

The rate of consumption of energy is called power.

The S.I. unit of power is Watt.

Explanation:

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