Which of the following characteristics are held in common by both gravitational and electrostatic forces when dealing with either point masses or charges?
a. potential energy is a function of distance of separation
b. forces are conservative
c. inverse square distance law applies
d. all of the above choices are valid
D
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Which of the following is not a metamorphic rock?
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We expect neutron stars to spin rapidly because they conserve angular momentum
Indicate whether the statement is true or false
Galaxies are labeled as active if there is an unusually large amount of star formation occurring in their centers.
Answer the following statement true (T) or false (F)
A solenoid with 400 turns has a radius of 0.040 m and is 40 cm long
If this solenoid carries a current of 12 A, what is the magnitude of the magnetic field near the center of the solenoid? (?0 = 4? × 10-7 T ? m/A) A) 16 mT B) 4.9 mT C) 15 mT D) 6.0 mT E) 9.0 mT