Solve the Problem $\mathrm { P } = \frac { \mathrm { W } } { \mathrm { t } }$

question 88

Multiple Choice

Solve the problem.
-Power is the time rate of doing work and is commonly measured in watts. Power is given by the formula $\mathrm { P } = \frac { \mathrm { W } } { \mathrm { t } }$ where P is power, W is work (in joules) , and t is time in seconds. If 800 watts of power are used in 27 seconds, how much work (in joules) was done?

• A) 3 joules
• B) 2160 joules
• C) 21,600 joules
• D) 30 joules

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