What future awaits Triton, the largest satellite of Neptune?
a. Tidal break-up as it spirals closer to Neptune
b. Escape from Neptune after billions of years, as Triton gradually spirals outward
c. Gravitational capture by Pluto
d. Probable destruction from impact by Pluto
Answer: a. Tidal break-up as it spirals closer to Neptune
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During retrograde motion, the planet Mars rises in the west and sets in the east.
Answer the following statement true (T) or false (F)
Two infinite, uniformly charged, flat surfaces are mutually perpendicular. One of the sheets has a charge density of +60 pC/m2, and the other carries a charge density of ?80 pC/m2. What is the magnitude of the electric field at any point not on either surface?
A. 1.1 N/C B. 5.6 N/C C. 7.9 N/C D. 3.8 N/C E. 4.0 N/C
If a vector pointing upward has a positive magnitude, a vector pointing downward has a negative magnitude
A) True B) False
A golf ball hits a wall and bounces back at 3/4 the original speed. What part of the original kinetic energy of the ball did it lose in the collision?
a. 1/4 c. 7/16 b. 3/8 d. 9/16