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

Author Question: Explain how a satellite can remain in orbit around the Earth without the expenditure of fuel. ... (Read 34 times)

BRWH

  • Hero Member
  • *****
  • Posts: 553
on: Jul 27, 2018
Explain how a satellite can remain in orbit around the Earth without the expenditure of fuel.
 
  What will be an ideal response?

Question 2

O-type stars in our galaxy are
 
  A) very common, making up about 50 of the total
  B) fairly common (several percent)
  C) very rare (less than 1)
  D) the most common type of stars in our galaxy (75 or more)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

LegendaryAnswers

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

The gravitational force on the satellite acts toward the Earth inward along the radius of the satellite's orbit. The satellite's displacement at any moment is tangent to the circular orbit, in the direction of its velocity, perpendicular to the radius and perpendicular to the force of gravity. Therefore, the work done by gravity is zero. Hence, no work needs to be done against the force of gravity.

Answer to Question 2

C


BRWH

  • Member
  • Posts: 553
Reply 2 on: Jul 27, 2018
Gracias!

bigsis44

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

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?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

The Orbit and Tails of a Comet The Orbit and Tails of a Comet
To check to see if the electric fuel pump can be operated from the relay contacts, use a fused ... To check to see if the electric fuel pump can be operated from the relay contacts, use a fused ...
An emission tester that uses nitrogen to pressurize the fuel system. An emission tester that uses nitrogen to pressurize the fuel system.
Earth-Sun Relationships Earth-Sun Relationships
Earth’s orientation Earth’s orientation
Earth Science, 14/E Earth Science, 14/E
Video: ADH and the arterioles, kidneys, sweat glands and the Atrial natriuretic peptide (ANP)

For a complete list of videos, visit our video library