This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat ... (Read 225 times)

fbq8i

  • Hero Member
  • *****
  • Posts: 527
on: Jul 29, 2018
A Carnot engine is operated as a heat pump to heat a room in the winter. The heat pump delivers heat to the room at the rate of 34 kJ per second and maintains the room at a temperature of 293 K when the outside temperature is 229 K.
 
  The power requirement for the heat pump under these operating conditions is closest to A) 7500 W.
  B) 6000 W.
  C) 17,000 W.
  D) 13,000 W.
  E) 9600 W.

Question 2

A steel guitar string with a diameter of 0.300 mm and a length of 70.0 cm is stretched by 0.500 mm while being tuned. How much force is needed to stretch the string by this amount? Young's modulus for steel is 2.0  1011 N/m2.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

connor417

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

10.1 N


fbq8i

  • Member
  • Posts: 527
Reply 2 on: Jul 29, 2018
Excellent

yeungji

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Orientation of the Central Engine and Its Jets Orientation of the Central Engine and Its Jets
A typical pop tester used to check the spray pattern of a diesel engine injector. A typical pop tester used to check the spray pattern of a diesel engine injector.
Material Balance over #3 Heat Exchanger Material Balance over #3 Heat Exchanger
A typical engine oil cooler. Engine coolant flows through the cooler adjuster that fits between the ... A typical engine oil cooler. Engine coolant flows through the cooler adjuster that fits between the ...
A turbocharger uses some of the heat energy that would normally be wasted. A turbocharger uses some of the heat energy that would normally be wasted.
You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ... You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ...
Video: How a Urinalysis is Performed

For a complete list of videos, visit our video library