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Author Question: A lawn mower has a 6-horsepower engine (1 HP = 750 W). If the engine has an efficiency of 20, and ... (Read 154 times)

SAVANNAHHOOPER23

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A lawn mower has a 6-horsepower engine (1 HP = 750 W). If the engine has an efficiency of 20, and the throttle is such that the engine cycles 10 times a second, the heat that is expelled in one cycle is
 a. 1 800 J
  b. 2 000 J
  c. 2 200 J
  d. 2 400 J
  e. 2 250 J

Question 2

A gasoline engine absorbs 2 500 J of heat and performs 1 000 J of mechanical work in each cycle. The amount of heat expelled in each cycle is
 a. 1 000 J
  b. 1 500 J
  c. 2 000 J
  d. 500 J
  e. 3 000 J



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CharlieArnold

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Answer to Question 1

A

Answer to Question 2

B




SAVANNAHHOOPER23

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Reply 2 on: Jul 28, 2018
Wow, this really help


kusterl

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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