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

Author Question: When a Hooke's law spring is stretched a distance 3x, how much is the increase in energy stored in ... (Read 66 times)

maychende

  • Hero Member
  • *****
  • Posts: 556
on: Jul 28, 2018
When a Hooke's law spring is stretched a distance 3x, how much is the increase in energy stored in it from when it was stretched a distance x? Give your answer in terms of a multiple of the energy stored in the spring when it is stretched a distance x.
 a. It is 3 times as much.
  c. It is 4 times as much.
  b. It is 8 times as much.
  d. It is 9 times as much.

Question 2

A Carnot engine runs between a hot reservoir at Th and a cold reservoir at Tc. If one of the temperatures is either increased or decreased by 3.5 K, which of the following changes would increase the efficiency by the greatest amount?
 a. increasing Th
  b. increasing Tc
  c. decreasing Tc
  d. cannot be determined from information given


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mammy1697

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


maychende

  • Member
  • Posts: 556
Reply 2 on: Jul 28, 2018
:D TYSM

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

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

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th The absorption of light energy by pigment molecules in the light-harvesting complex, and the path th
Energy Energy
Compression used to increase circulation when the athlete is clothed. Compression used to increase circulation when the athlete is clothed.
Twelve primary energy channels and the Conception and Governing Vessels of Traditional Chinese ... Twelve primary energy channels and the Conception and Governing Vessels of Traditional Chinese ...
The first five reactions constitute the energy-investment phase of glycolysis The first five reactions constitute the energy-investment phase of glycolysis
How an Increase in Income Inequality Affects the Desired Tax Rate How an Increase in Income Inequality Affects the Desired Tax Rate
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

For a complete list of videos, visit our video library