Question

A pump of power 1500W is used for 5 minutes. The energy supplied by the pump is:

A) 7500 J
B) 4500 J
C) 3000 J
D) 150000 J
E) None of the above.

Answer 1

The energy supplied by a 1500W pump used for 5 minutes is calculated as power multiplied by time, equating to 450000J. The provided options do not match this calculation, so the correct answer is 'None of the above'.

Step-by-step explanation:

The energy supplied by a 1500W pump used for 5 minutes can be calculated using the relationship that power (in watts) is equal to energy (in joules) divided by time (in seconds). Since there are 60 seconds in a minute, 5 minutes equals 300 seconds. Thus, the energy E supplied by the pump is:

E = power × time = 1500W × 300s = 450000J.

Therefore, the correct answer is None of the above, as none of the listed options match the calculated energy of 450000J.