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Luba_88 [7]
3 years ago
10

Hi to answer this question you need to be in 5th grade or older

Physics
1 answer:
777dan777 [17]3 years ago
5 0

The answer is A.They push one another apart

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An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5 kg/h. If the efficiency is 28%, determine
Fudgin [204]
Efficiency =  Power Output / Power Input

Power Input = Rate of Energy input = 44.4 MJ/kg * 5 kg/h

 = 222 MJ/h

But 1 hour = 3600seconds

222 MJ/h = 222 MJ/3600s =  0.061667 MW              J/s = Watts

Power input = 0.061667 MW = 61 667 W

From  Efficiency =  Power Output / Power Input

   28% =  Power Output / 61667

   Power Output = 0.28 * 61667

   Power Output = 17266.76 W
 
  Power Output = 17 267 W

 Rate of heat Rejection = Power input - Power output

                                        = 61667 - 17267 = 44400 W

Rate of heat Rejection = 44 400 W.


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What does this equation mean FeDe=FrDr
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Which of the following measurements changes based on the strength of gravity? A.Mass B.Size C.Length D.Weight
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At 4 m/s?

How do the two kinetic energies compare to one another? QUADRUPLES !

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Answer:

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