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Pls help with my physics hw

Pls Help With My Physics Hw class=
Pls Help With My Physics Hw class=
Pls Help With My Physics Hw class=
Pls Help With My Physics Hw class=
Pls Help With My Physics Hw class=

Sagot :

Elvokipkoriridn

Answer:

1. (c) 18 J

2. 70%

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

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