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

Author Question: A spaceship of mass m1 circles a planet (mass = m2) in an orbit of radius r. How much energy is ... (Read 133 times)

Cooldude101

  • Hero Member
  • *****
  • Posts: 557
on: Jul 28, 2018
A spaceship of mass m1 circles a planet (mass = m2) in an orbit of radius r. How much energy is required to transfer the spaceship to a circular orbit of radius 3R?
 a. Gm1m2/(2r)
  b. Gm1m2/(3r)
 c. Gm1m2/(4r)
 d. Gm1m2/(6r)
 e. 3Gm1m2/(4r)

Question 2

What is the gravitational force on a 20-kg satellite circling the Earth (radius = 6.4  106 m, mass = 6.0  1024 kg) with a period of 5.0 h?
 a. 88 N
  b. 55 N
  c. 36 N
  d. 98 N
  e. 18 N


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

triiciiaa

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

c


Cooldude101

  • Member
  • Posts: 557
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

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?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Energy costs of locomotion. Energy costs of locomotion.
The thermodynamics of protein folding depicted as a free-energy funnel The thermodynamics of protein folding depicted as a free-energy funnel
Center of Mass of a Binary Star System Center of Mass of a Binary Star System
Free Energy Rules: The Second Law in Open Systems Free Energy Rules: The Second Law in Open Systems
Cocaine, C17H21NO4, in urine can be confirmed by mass spectroscopy at a concentration of 150 ... Cocaine, C17H21NO4, in urine can be confirmed by mass spectroscopy at a concentration of 150 ...
In Falls, Energy Is Transmitted Along the Skeletal System In Falls, Energy Is Transmitted Along the Skeletal System
Video: Protein catabolism (Krebs cycle) and Protein anabolism (protein synthesis)

For a complete list of videos, visit our video library