Answer: 87500J
Explanation:
Given that,
Power exerted by crane = 3,500 W
Time taken = 25 seconds
work done by crane = ?
Since power is the rate of work done per unit time, then power is workdone by the crane divided by the time taken.
i.e power = work / time
3,500 W = work / 25 seconds
Work = 3500W x 25 seconds
Work = 87500J
Thus, 87500 joules of work was done by the crane.
<span> the answer is 1,500 & 1,700
</span>
Power = (voltage) x (current)
1 watt = (1 volt) x (1ampere)
= 1 "volt-amp" or 1 "amp-volt" .
Answer:
this question doesn't make sense
Explanation:
If energy input remains
constant and voltage remains the same in a circuit, but the current decreases,
the power has increased. It is presented in the equation P = VI where P is
power, V is voltage and I is current.