A car needs to generate 75.0 hp in order to maintain a constant velocity of 27.3 m/s on a flat road. What is the magnitude of the total resistive force acting on the car (due to friction, air resistance, etc.)? (1 hp = 746 W)
A) 2.05 × 103 N
B) 2.75 N
C) 1.03 × 103 N
D) 2.87 × 103 N
A
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A pair of parallel conducting plates have potentials of -17 V and 55 V, respectively. An electron is ejected from the plate at potential -17 V and travels to the plate at 55 V. What is the speed of the electron as it strikes the 55 V plate, assuming it left the -17 V plate from rest? The mass of the electron is 9.11 x 
kg.
a. 
b. 
c. 
d. 
Polaris is a second magnitude star, and Phi Pegasi is about 16 times fainter than Polaris. What is the approximate magnitude of Phi Pegasi?
a. 18 b. ?14 c. 3 d. ?3 e. 5
Rotational Dynamics: A uniform, solid, 100-kg cylinder with a diameter of 1.0 m is mounted so it is free to rotate about fixed, horizontal, frictionless axis that passes through the centers of its circular ends. A 10-kg block is hung from a very light thin cord wrapped around the cylinder's circumference. When the block is released, the cord unwinds and the block accelerates downward, as shown in the figure. What is the acceleration of the block?
Fill in the blank(s) with the appropriate word(s).
A magnetic field will be produced at a point in space if an electric field at that point
a. exists b. gets stronger c. gets weaker d. changes direction e. all of the above