Author Question: A 50-kg satellite circles the Earth in an orbit with a period of 120 min. What minimum energy is ... (Read 93 times)

kshipps

  • Hero Member
  • *****
  • Posts: 571
A 50-kg satellite circles the Earth in an orbit with a period of 120 min. What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4  106 m, mass = 6.0  1024 kg)
 a. 2.9  108 J
  b. 3.5  108 J
  c. 4.1  108 J
  d. 4.7  108 J
  e. 5.9  108 J

Question 2

An object is released from rest when it is a height h above the surface of a planet of mass M and radius R. What is the speed of the object just before striking the surface of the planet? Neglect any air resistance. Let h = 4.0  106 m, R = 5.0  106 m, and M = 4.0  1024 kg.
 a. 7.8 km/s
  b. 3.5 km/s
  c. 5.4 km/s
  d. 6.9 km/s
  e. 4.8 km/s



Jane

  • Sr. Member
  • ****
  • Posts: 309
Answer to Question 1

A

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

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.

For a complete list of videos, visit our video library