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

Author Question: A 2.00-kg ball has zero potential and kinetic energy. Maria drops the ball into a 20.0-m deep well. ... (Read 108 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
on: Jul 28, 2018
A 2.00-kg ball has zero potential and kinetic energy. Maria drops the ball into a 20.0-m deep well. After the ball comes to a stop in the mud, the sum of its potential and kinetic energy is:
 a. 392 J.
  c. 784 J.
  b. -392 J.
  d. zero.

Question 2

Three Carnot engines operate between temperature reservoirs as follows: Engine A: Th = 1300 K, Tc = 1000 K; Engine B: Th = 1000 K, Tc = 700 K; Engine C: Th = 500 K, Tc = 350 K. Which two engines have the same thermal efficiency?
 a. A and B
  b. B and C
  c. A and C
  d. No two have the same thermal efficiency.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

komodo7

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

B


segrsyd

  • Member
  • Posts: 530
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

The relationship between free energy and electron movement along the electron transport chain The relationship between free energy and electron movement along the electron transport chain
Free Energy Enzymes Free Energy Enzymes
Street Drugs and Their Potential Effects During Pregnancy Street Drugs and Their Potential Effects During Pregnancy
Energy radiated by substances occurs over a wide range of wavelengths. Energy radiated by substances occurs over a wide range of wavelengths.
Apply deep effleurage to triceps. Position arm with elbow pointing upward to access the triceps ... Apply deep effleurage to triceps. Position arm with elbow pointing upward to access the triceps ...
Animated The one-way flow of energy and cycling of materials in the world of life Animated The one-way flow of energy and cycling of materials in the world of life
Video: Embryonic development - Weeks 5 to 8

For a complete list of videos, visit our video library