3 years ago

Evaluating an experiment provides a scientist with an opportunity to check for errors in experiment design.

Physics

1 answer:

Lemur [1.5K]3 years ago

5 0

This Sentence is True.

Hope this helps.

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In a simple machine, the energy input is 120 J. If the efficiency of the machine is 80%, calculate the energy output

pashok25 [27]

Answer:

<h2>96 Joules</h2>

Explanation:

We know that efficiency is the ratio of output power by input power. i.e. Efficiency describes the quality of machine or system how good it is.

Solution,

Energy input of system = 120 J

Efficiency = 80% = $\frac{80}{100} = 0.8$

Now,

According to definition,

Efficiency = $\frac{output}{input}$

Cross multiplication:

$output \: = \: 0.8 \times 120$

Calculate the product

$output \: = 96 \: joules$

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Brut [27]

Hey there!

When light changes speed, it REFRACTS.
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You move a 75-kg box 35 m. This requires a force of 90 N. how much work is done while moving the box?

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W = F*d.

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Which sentences describe central ideas of the video? Select all that apply.

sertanlavr [38]

Answer:

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