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19 votes
50 j of work was performed in 20 seconds. How much power was used to preform this task

User Spencer R
by
4.9k points

2 Answers

6 votes

Answer:

2.5

Step-by-step explanation:

User Zstack
by
4.3k points
5 votes

Answer:

Power = 2.5 [W]

Step-by-step explanation:

To be able to solve this problem we must remember that power is defined as the relationship of the work done in a given time interval.


P=W/t

where:

P = power [W] (units of watts)

W = work = 50 [J]

t = time = 20 [s]

Now replacing:


P=50/20\\P=2.5[W]

User Vincent Sit
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4.9k points