1. A car engine transfers 3000J in 20 seconds. What is the power generated by the engine?
2. 400J of energy is transferred in raising an object in 1 minute. What is the power?
3. A kettle has a power rating of 2000W. How much work is done by the kettle in boiling water in 40 seconds?
Answers
Answered by
0
1. 150watt
2. 66666667watt
3. 80,000joule
using the formula
power= distance
time
Answered by
1
P =w/t
(1) p = 3000/20
P = 150
(2) p = 4000/60
P= 66.67
(3) p = w/t
w =pt
= 2000x 40
= 80000
Hope it helps you plz mark as brilliant answer
(1) p = 3000/20
P = 150
(2) p = 4000/60
P= 66.67
(3) p = w/t
w =pt
= 2000x 40
= 80000
Hope it helps you plz mark as brilliant answer
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