« 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 93 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?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Einstein - Science is the work of... Einstein - Science is the work of...
The work of geneticists is valuable because genes play a role in virtually every aspect of ... The work of geneticists is valuable because genes play a role in virtually every aspect of ...
The physician and medical assistant will often work together to choose appropriate educational ... The physician and medical assistant will often work together to choose appropriate educational ...
A demonstration engine showing the amount of water that can be circulated through the cooling ... A demonstration engine showing the amount of water that can be circulated through the cooling ...
A typical engine coolant temperature (ECT) sensor. ECT sensors are located near the thermostat ... A typical engine coolant temperature (ECT) sensor. ECT sensors are located near the thermostat ...
A 44-g block of ice at -15°C is dropped into a calorimeter (of negligible heat c A 44-g block of ice at -15°C is dropped into a calorimeter (of negligible heat c
Video: Lactation and Breast Feeding

For a complete list of videos, visit our video library