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goblinko [34]
3 years ago
13

In a heat engine, Qh and Qc represents high temperature substance and low temperature substance respectively. Which of the follo

wing expressions is correct for the efficiency of the heat engine?

Physics
1 answer:
ElenaW [278]3 years ago
6 0

The efficiency of a heat engine is given by the expression eff =\frac{Q_h-Q_c}{Q_h}

The efficiency of a heat engine is the ratio of the work done by the engine to the heat given as the input to the engine.

eff =\frac{W}{Q_h}

The heat engine absorbs Q h from the hot reservoir , performs a work <em>W</em> on the absorbed heat and rejects Qc to the cold reservoir.

Therefore, the work done  is given by,

W=Q_h - Q_c

Thus the efficiency is given by, eff =\frac{Q_h-Q_c}{Q_h}

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The correct answer is - A matter that has an ordered arrangement of atoms, molecules, or ions.

Explanation:

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The calculated mutual inductance is 8.544 x 10⁻⁵ H.

Two coils have a mutual inductance of 1 henry when emf of 1 volt is induced in coil 1 and when the current flowing through coil 2 is changing at the rate of one ampere per second.

Length of the solenoid= 5.0 cm

Area of cross-section=1.0 cm²

no of spaced turns=300 turns

turns of insulated wire=180 turns

Mutual inductance (M) = μ₀μr N1N2 A/ L

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hence, the mutual inductance is 8.544 x 10⁻⁵ H.

Learn more about Mutual inductance here-

brainly.com/question/14014588

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1 year ago
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Take the regular compass and hold it so the case is vertical. Now use it to investigate the direction of the coil’s magnetic fie
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Please find the answer in the explanation

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Take the regular compass and hold it so the case is vertical. Now use it to investigate the direction of the coil’s magnetic field at locations other than the central axis.

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