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 50 times)

waynest

  • Hero Member
  • *****
  • Posts: 553
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
Answer to Question 1

D

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

For a complete list of videos, visit our video library