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nydimaria [60]
2 years ago
9

How long does it for a car to cover 100 miles at 60 mi/hr? Use one of the following equations:

Physics
1 answer:
Fed [463]2 years ago
5 0
D=vt
100=60(t)
t=1.666hours (an hour and two thirds)
Hope I helped (:
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Answer:

The value is   \eta  =  0.2145  or  21.45%

Explanation:

From the question we are told that

    The first reservoir is at steam point  T_s =  100^o C =  100 + 273 = 373 \ K  

    The  second reservoir is at room temperature T_r  =  20^o C = 293 \ K

Generally the  maximum theoretical efficiency of a Carnot engine  is mathematically evaluated as

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