Determine the power of 900 joules of work done in 4 seconds

A) 3600 W

B) 225 W

C) 904 W

D) 450 W

B. 225 W

Explanation:

Power is the measure of the amount of work done in a certain time frame. It can be found using the following formula.

p=w/t

where w is the amount of work done in joules and t is the amount of time in seconds.

We know that 900 joules of work was done in 4 seconds.

w=900 J

t = 4 s

Substitute these values into the formula.

p=900 J / 4 s

Divide 900 by 4

900/4=225

p = 225 J/s

1 Joules of work per second (J/s) is equal to 1 Watt (W). Therefore, we can substitute Watts for Joules per second.

p = 225 Watts

The power is 225 Watts, and the correct answer is B.