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romanna [79]
3 years ago
9

If the efficiency of a lever is 30% and 560 J is used to move the lever, what is the work output?

Physics
1 answer:
Angelina_Jolie [31]3 years ago
4 0
If the efficiency is 30%, then 30% of the work you put into it comes out
in the form of useful work, and the other 70% turns into forms of energy
that you can't use to do the job ... like heat.

30% of 560 J = 168 J (B)
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Hi im really confused:
Vitek1552 [10]

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U =  c_{p} m ΔT

U = Energy

c_{p} = Specific heat

m = Mass

ΔT = Change in temperature

ρ = Density

V = Volume

ρ = 1000 g / m³ (Dry air )

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ΔT = 5 °C

V = 4 * 4 * 3

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U = 336000 J

U = 336 kJ

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Answer:

C. Angular Separation

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Answer:

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