21
practice examMultiple Choice

Practice Exam

Question 21 • Physical Science

A 4400 cap w motor is used to do work. If the motor is used for 200 s , how much work could it do? (Power: cap p is equal to cap w over t )

Answer
A
22 cap j
B
4600 cap j
C
4200 cap j
D
880 comma 000 cap j

Explanation

Use the power relationship P = W/t and rearrange it to W = Pt. With power 4400 W and time 200 s, the work is 4400 × 200 = 880,000 J. Therefore, the correct choice is 880,000 J.

AI-written and checked against the verified answer.

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