A construction worker puts 20J of energy in to one strike of his hammer on the head of a nail. The energy transferred to driving

Question

2 years ago

15

d nail in to d wood is 8J. What is d efficiency of d construction worker's hammering?

2 answers:

KengaRu [80] · Answer 1 · 2022-08-18T02:17:58+03:00

Answer:

The efficiency can be found using the formula ;

efficiency=energy output divided by energy input ×100%.

efficiency=8.0j÷ 20j × 100%

efficiency=0.4 ×100%

efficiency=40%.

the efficiency of the hammer strike was 40%. vibration and heating of the nail are two possible reasons for the energy loss.

Slav-nsk [51] · Answer 2 · 2022-08-18T01:14:54+03:00

3 0

Answer:

efficiancy=40 percent

Explanation:

efficiency=energy output/energy input×100

efficiancy=8J/20J×100

efficiancy=0.4×100

efficiancy=40 percent

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