To find the power output of the machine, we need to use the formula for power, which is:
[tex]\[ \text{Power} = \frac{\text{Work}}{\text{Time}} \][/tex]
where:
- Work is the amount of energy transferred or converted (measured in joules, J).
- Time is the duration over which the work is done (measured in seconds, s).
Given the values:
- Work = 1000 joules (J)
- Time = 20 seconds (s)
We can substitute these values into the formula to find the power:
[tex]\[ \text{Power} = \frac{1000 \text{ J}}{20 \text{ s}} \][/tex]
By dividing 1000 joules by 20 seconds, we get:
[tex]\[ \text{Power} = 50 \text{ watts (W)} \][/tex]
So, the power output of the machine is 50 W.
The correct answer is:
b. 50 W
