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Alexxandr [17]
3 years ago
6

Which physical quantity measures what fraction of the input energy actually converts into output energy? Need help fast!

Engineering
1 answer:
Kazeer [188]3 years ago
6 0
The answer is A because kinetic energy and potential energy are linked together
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B. Hybrid

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When engineers develop a model, which step in the engineering process is<br><br> taking place
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Explanation:

When engineers develop a model, the step that is taking place in the engineering process is referred to as the design a solution or problem step.

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7 0
3 years ago
Which option describes the best material for the project described in the following scenario?
padilas [110]

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I think the answer is:

(4) Plastic is economic, easily cleanable, & moldable

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3 years ago
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If you install special sound-reflecting windows that reduce the sound intensity level by 33.0 dBdB , by what factor have you red
Sever21 [200]

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The sound intensity is reduced by a factor of 1995.26

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When comparing two sound intensities, the intensity level is measured in the unit of decibel or dB. The intensity of the threshold of hearing for a human being is  10^−12 W/m^2 . When the intensity level is zero, it means that the sound intensity is the same as the threshold of hearing.

The reduced sound intensity level is given as 33 dB, so

10  log (I/Io)  = - 33

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So, the intensity ratio is

I/Io = 10^-3.3

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1/ 5.01 x 10^-4 = 1995.26

3 0
4 years ago
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