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garri49 [273]
4 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]4 years ago
6 0
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]4 years ago
6 0

Answer:

C.70% on edggggg

Explanation:

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Perform the following mathematical operation, and report the answer to the correct number of significant figures. 0.34 x 0.568=?
slavikrds [6]

The correct answer to the problem is 0.193 which is three significant figures.

<h3>What are significant figures?</h3>

The term significant figures has to do with the figures that have a mathematical meaning. We know that the result has to correspond to the highest number of significant figures.

Hence, If we multiply 0.34 x 0.568 the result ought to be recorded as 0.193 which is three significant figures.

Learn more about significant figures:brainly.com/question/14804345

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6 0
2 years ago
How to balance this equation NH4OH+H3PO4=(NH4)3PO4+H2O with explainatio please ​
Maru [420]

Answer:

3 NH4OH (l) + H3PO4 (aq) → (NH4)3PO4 (aq) + 3 H2O (l)

Explanation:

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5 0
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77julia77 [94]

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4 0
3 years ago
How fast must a 56.5-g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green li
nikklg [1K]

Answer:vv

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Explanation:

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\lambda=\frac {h}{m\times v}

Where,  

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Applying in the equation as:-

5400\times 10^{-10}=\frac{6.626\times 10^{-34}}{0.0565\times v}

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7 0
3 years ago
How many hydrogen adams are in water?
Xelga [282]
The answer is 2 hope it helps
3 0
3 years ago
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