A spherical shell of inner diameter R and outer diameter 3R has a uniform density ?. What is the magnitude of the gravitational acceleration a distance 2R from the center of the spherical shell?
A)
15?G?R/7
B)
32?G?R/5
C)
25?G?R/12
D)
7?G?R/6
E)
7?G?R/3
E
You might also like to view...
An atom consists of (check all that apply)
A. negatively charged protons in a nucleus orbited by positively charged electrons. B. positively charged protons in a nucleus orbited by negatively charged neutrons. C. electrons in a nucleus orbited by protons. D. None of these choices are correct.
Which force can act over distances comparable to the distance between planets?
a. only gravitational b. only electrical c. only magnetic d. All of the above.
If the lapse rate is smaller than the adiabatic lapse rate, the air is stable
What will be an ideal response?
The acceleration due to the Earth's gravity, in English units, is 32 ft/s2. In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 132 ft/s. From what height was the ball dropped?
A. 132 ft B. 421 ft C. 165 ft D. 272 ft