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Andru [333]
3 years ago
13

An electrical power plant manages to send 88% of the heat produced in the burning of fossil fuel into the water-to-steam convers

ion. Of the heat carried by the steam, 40% is converted to the mechanical energy of the spinning turbine. Which of the following choices best describes thvall efficiency of the heat-to-work conversion in the plant (as a percentage)?
A. less than 40%
B. exactly 147%
C. 64%
D. greater than 88%
E. 40%
Physics
1 answer:
Naya [18.7K]3 years ago
4 0

Answer:

A

Explanation:

Let the x represent the amount of heat generated from the fossil fuel.

88% of x = 0.88 x

0.88 x was used to convert water to steam.

heat carried by steam = 40% × 0.88 x = 0.352 x

efficiency of the heat -to- work conversion = work output / work input = 0.352 x / x = 0.352 × 100 = 35.2 % which is less than 40 %

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b) m=2.033e-5kg

<h3>Number of stitches per sec and he mass of  oscillation motion</h3>

Question Parameters:

This <u>sewing </u>machine is capable of stitching 1,500 stiches in one minute.

If the <em>sewing </em>machine has a spring constant of 0.5 N/m,

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b)

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