« previous next »

Author Question: What is the kinetic energy of a 0.160-kg ball thrown at 40.0 m/s (90.0 mph)? a. 54.0 J b. 64.0 J ... (Read 63 times)

waynest

  • Hero Member
  • *****
  • Posts: 553
on: Jul 28, 2018
What is the kinetic energy of a 0.160-kg ball thrown at 40.0 m/s (90.0 mph)?
 a. 54.0 J
  b. 64.0 J
  c. 108 J
  d. 128 J
  e.newton-meter.

Question 2

A system has an increase in internal energy of 60 J while 90 J was removed from the system by heat. How much work was involved during this process and was it done on the system or done on its environment?
 a. 30 J on the system
  c. 150 J on the system
  b. 30 J on the environment
  d. 150 J on the environment


enass

  • Sr. Member
  • ****
  • Posts: 380
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Aspergillosis fungal ball in the right lung. Aspergillosis fungal ball in the right lung.
Reaction 6: Generation of the First Energy-Rich Compound Reaction 6: Generation of the First Energy-Rich Compound
Food choices vs. energy choices Food choices vs. energy choices
Energy Transfer Energy Transfer
Electromagnetic Spectrum of Radiant Energy Electromagnetic Spectrum of Radiant Energy
Energy In, Energy Out Energy In, Energy Out
Video: Stomach peristalsis - Movement of Food Through the Small Intestine

For a complete list of videos, visit our video library