« previous next »

Author Question: The temperature inside a Carnot refrigerator placed in a kitchen at 22C is 2.0C. The heat extracted ... (Read 179 times)

xroflmao

  • Hero Member
  • *****
  • Posts: 515
on: Jul 29, 2018
The temperature inside a Carnot refrigerator placed in a kitchen at 22C is 2.0C. The heat extracted from refrigerator is 89 MJ/h. What power is needed to operate this refrigerator?
 
  A)
 
  1.7 kW
 
  B)
 
  1.8 kW
 
  C)
 
  1.5 kW
 
  D)
 
  1.9 kW
 
  E)
 
  1.6 kW

Question 2

An object is placed 10 cm from a convex lens of focal length 20 cm. What is the magnification?
 
  A)
 
  0.50
  B)
 
  1.0
  C)
 
  1.5
  D)
 
  2.0
  E)
 
  2.5


kjohnson

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Countercurrent heat exchange in dolphin flippers promotes conservation of body heat. Countercurrent heat exchange in dolphin flippers promotes conservation of body heat.
Homeostasis and negative feedback as related to control of body temperature. Homeostasis and negative feedback as related to control of body temperature.
Influences on Temperature: South-facing slopes are typically more vegetated than north-facing ... Influences on Temperature: South-facing slopes are typically more vegetated than north-facing ...
Inside ankle press. Place the heel of your left hand on the ball of the recipient’s right foot, ... Inside ankle press. Place the heel of your left hand on the ball of the recipient’s right foot, ...
The Effect of Temperature on delta G for a process or reactions The Effect of Temperature on delta G for a process or reactions
A rise in global temperature of more than 3˚C A rise in global temperature of more than 3˚C
Video: Mendel's Principles of Dominance, Segregation and Independent Assortment

For a complete list of videos, visit our video library