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Concept explainers
Consider the efficiency of these four machines:
(a) Energy in
(b) Energy in
(c) Energy in
(d) Energy in
Compare the efficiencies, from highest to lowest.
![Check Mark](/static/check-mark.png)
The ranking from highest to lowest, in terms of efficiency of the machines.
Answer to Problem 4TC
The ranking from highest to lowest, in terms of efficiency of the machines is
Explanation of Solution
Given info: Input energy of the machine (a) is
The efficiency of the system can be defined as the ration between the output work and input work.
Write the expression for the efficieny.
Here,
Substitute
Thus, the efficiency of the machine (a) is
Substitute
Thus, the efficiency of the machine (b) is
Substitute
Thus, the efficiency of the machine (c) is
Substitute
Thus, the efficiency of the machine (d) is
Conclusion:
Therefore, the ranking from highest to lowest, in terms of efficiency of the machines is
Chapter 6 Solutions
Conceptual Physical Science Explorations
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