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Pls help with my physics hw
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Pls help with my physics hw

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User Yuliana
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1 Answer

4 votes

Answer:

1. (c) 18 J

2. 70%

Step-by-step explanation:

1. Thermal energy released (waste) = input energy (it is usually more) - output (usually less_used to perform useful work)

= 60 joules - 42 joules

= 18 joules

2. % energy efficiency = output/input x 100%

= (42/60) x 100%

= 70%

I hope this helps. have a nice studies

User Oliver Hallam
by
5.4k points
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