« previous next »

Author Question: An engine on each cycle takes in 40. Joules, does 10. Joules of work, and expels 30. J of heat. What ... (Read 112 times)

cherise1989

  • Hero Member
  • *****
  • Posts: 555
on: Jul 29, 2018
An engine on each cycle takes in 40. Joules, does 10. Joules of work, and expels 30. J of heat. What is its efficiency?
 
  What will be an ideal response?

Question 2

The inductive reactance of a 20-mH inductor at a certain frequency is 120 . What is the frequency in rad/s?
 
  A) 2000 rad/s
  B) 4000 rad/s
  C) 5000 rad/s
  D) 6000 rad/s
  E) 7000 rad/s


Zebsrer

  • Sr. Member
  • ****
  • Posts: 284
Reply #1 on: Jul 29, 2018
Answer to Question 1

eff = 25

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

combined-cycle power plant combined-cycle power plant
Nitrogen Cycle Nitrogen Cycle
Men who are at risk for heart disease and report work-related stressors are at greater risk of death ... Men who are at risk for heart disease and report work-related stressors are at greater risk of death ...
Success, You Rock, Achievement, The way we work Success, You Rock, Achievement, The way we work
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ... The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
How much heat energy in Joules is required to heat 16.0 g of copper from 23.0 °C How much heat energy in Joules is required to heat 16.0 g of copper from 23.0 °C
Video: Sigmoidoscopy

For a complete list of videos, visit our video library