Author Question: The force of gravity does NOT do work on an object that is: a. falling. b. rising. c. stationary. ... (Read 78 times)

LaDunn

  • Hero Member
  • *****
  • Posts: 526
The force of gravity does NOT do work on an object that is:
 a. falling.
  b. rising.
  c. stationary.
  d. a falling piece of writing paper.
  e. being pushed upwards.

Question 2

If the orbit is elliptical, rather than circular, what can be said about the work done by the Sun on Earth?
 a. It does not matter whether the orbit is circular or elliptical, no work is done.
  b. If the orbit is elliptical, work is done to speed up or to slow down Earth, depending on its location in orbit.
  c. Whether the orbit is circular or elliptical, work must be done to propel Earth around the Sun.
  d. The work the Sun does on Earth accounts for Earth's changes of season.
  e. The work the Sun does on Earth causes the tides.



sarajane1989

  • Sr. Member
  • ****
  • Posts: 296
Answer to Question 1

c

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

For a complete list of videos, visit our video library