A rod (length = 2.0 m) is uniformly charged and has a total charge of 5.0 nC. What is the electric potential (relative to zero at infinity) at a point which lies along the axis of the rod and is 3.0 m from the center of the rod?
A. 22 V
B. 19 V
C. 16 V
D. 25 V
E. 12 V
Answer: C
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A car is moving with a speed of 32.0 m/s. The driver sees an accident ahead and slams on the brakes, giving the car a deceleration of 3.50 m/s2. How far does the car travel after the driver put on the brakes before it comes to a stop?
A) 4.57 m B) 9.14 m C) 112 m D) 146 m E) 292 m
This graph shows a spacetime diagram for a car. At which of the numbered points is the car stationary?
A) Point 1 B) Point 2 C) Point 3 D) Point 4 E) both Points 2 and 4
Theoretical physicists have had the least success in combining which force with the electromagnetic force?
a. strong nuclear force b. weak nuclear force c. gravitational force d. electrical Coulomb force
Which of the following is not a property of a polymer?
(a) Large molecules with repeating units (b) Can be either organic or inorganic (c) A high density (d) Good resistance to corrosion