Give an estimate of the number of steps in the stairway of a ten-story building.
A. 101
B. 102
C. 103
D. 104
B. 102
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A car is traveling along a highway at 65 mph. What is the linear speed of the top of the tires?
What will be an ideal response?
When a charged particle is moved along an electric field line,
a. the electric field does no work on the charge. b. the electrical potential energy of the charge does not change. c. the electrical potential energy of the charge undergoes the maximum change in magnitude. d. the voltage changes, but there is no change in electrical potential energy. e. the electrical potential energy undergoes the maximum change, but there is no change in voltage.
A block is at rest on a wooden ramp. The coefficient of static friction between the block and ramp is 0.35. What is the angle between the ramp and the horizontal direction when the box first begins to slide?
A. 17
B. 19
C. 29
D. 20
E. 22
The acceleration due to gravity on the surface of Earth is g. Calling R the radius of Earth, at what distance from Earth's center would the acceleration due to gravity drop to g/16?
A) 16 R B) R/16 C) R/4 D) 4 R E) 2 R