An Irreversible Engine Operating Between the Temperatures Of $550 \mathrm {~K}$

question 25

Multiple Choice

An irreversible engine operating between the temperatures of $550 \mathrm {~K}$ and $300 \mathrm {~K}$ extracts $1.20 \mathrm {~kJ}$ of heat from the hot reservoir and produces $0.450 \mathrm {~kJ}$ of work. How much entropy is created in the process?

• A) \(0.68 \mathrm {~J} / \mathrm { K }\)
• B) \(0.44 \mathrm {~J} / \mathrm { K }\)
• C) \(0.32 \mathrm {~J} / \mathrm { K }\)
• D) \(0 \mathrm {~J} / \mathrm { K }\)
• E) \(0.73 \mathrm {~J} / \mathrm { K }\)

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Definitions:

Straight-line Depreciation

A technique of distributing the expense of a physical asset uniformly over its operational lifespan.

Accelerated Depreciation

A method of depreciation in which an asset loses book value at a faster rate than the traditional straight-line method over its useful life.

Useful Life

The expected time period over which an asset is useful to the owner.

Double-declining-balance

An accelerated method of depreciation which double the rate of normal depreciation, reducing the value of assets more quickly.