College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Please answer the question and subquestions entirely. This is one single question. According to the official guideline, I can ask two subquestions! Thank you!

 

1)

Two point masses are placed 10.0 cm apart and attract each other with a force of 10.0 N. Find the force of gravitational attraction between the masses when they are placed 5.00 cm apart.
   
3.00 N
   
4.50 N
   
20.0 N
   
40.0 N

a)

The radius of the orbit of a certain asteroid is four astronomical units. What is the period (in years) of this asteroid?
   
2 years
   
4 years
   
6 years
   
8 years

b)

A satellite is orbiting the earth at an altitude where the acceleration due to gravity is 8.70 m/s 2. What is its speed?
   
2.65 x 103 m/s
   
7.45 x 103 m/s
   
7.68 x 103 m/s
   
7.91 x 103 m/s
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