An object rests on an inclined surface. If the inclination of the surface is made steeper, what does the normal force on the object do?
A) increase
B) decrease
C) stays the same
D) The normal force is zero N.
E) Cannot be determined without additional information.
B
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A bullet is fired from ground level with a speed of 150 m/s at an angle 30.0° above the horizontal at a location where g = 10.0 m/s2. What is the horizontal component of its velocity when it is at the highest point of its trajectory?
A) 0 m/s B) 10 m/s C) 75.0 m/s D) 130 m/s E) 150 m/s
How is the energy stored in a current-carrying inductor related to its self-inductance, L?
a. directly proportional to L1/2 c. inversely proportional to L b. directly proportional to L d. directly proportional to L2
What is a "super-Earth"?
A) a rocky planet that is more massive than Earth B) a rocky planet that has more water than Earth C) a jovian planet that is approximately the same mass as Earth D) a jovian planet that has a solid surface E) a rocky planet that is closer to its host star than Earth is to the Sun
The Ptolemaic model of the solar system was useless for predicting planetary positions
Indicate whether the statement is true or false