Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail. Wh

Question

garri49 [273]

3 years ago

10

Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail. Wh

at is the efficiency of the hammer?

Chemistry

2 answers:

astraxan [27] · Answer 1 · 2021-12-04T22:04:30+03:00

The efficiency of any machine is given by:

efficiency = output obtained / input given

Substituting the values,
Efficiency = 105 / 150
Efficiency = 0.7

Converting this to a percentage, the efficiency of the hammer is 70%.
This is a fairly high efficiency, and this is due to the fact that the hammer is a simpler machine. The more complex a machine is, the greater are the losses in it due to friction, meaning there is a lower efficiency.

Valentin [98] · Answer 2 · 2021-12-04T23:59:26+03:00

Valentin [98]3 years ago

6 0

Answer:

C.70% on edggggg

Explanation: