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Author Question: A thermodynamic engine having the maximum possible efficiency has an efficiency of 25 when operating ... (Read 112 times)

maychende

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on: Jul 29, 2018
A thermodynamic engine having the maximum possible efficiency has an efficiency of 25 when operating between two heat reservoirs. If the temperature of the cold reservoir is 300 K, what is the temperature of the hot reservoir?
 
  A) 350 K
  B) 375 K
  C) 400 K
  D) 450 K
  E) 500 K

Question 2

A 100-W driveway light bulb is on 10 hours per day. If the power company charges 10 for each kilowatt-hour of electric energy used, estimate the yearly cost to operate the bulb if it is used every day for a 365-day year.
 
  A) 3.65
  B) 7.30
  C) 37
  D) 73
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pratush dev

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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maychende

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Reply 2 on: Jul 29, 2018
Excellent

chereeb

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Reply 3 on: Yesterday
Wow, this really help

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