If F = 5.0 N, what is the magnitude of the force exerted by block 2 on block 1?
A. 17 N
B. 19 N
C. 21 N
D. 23 N
E. 5.0 N
Answer: A
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Series/Parallel Circuits: Draw a circuit with two batteries, a resistor between them, and a capacitor in parallel with the resistor. The batteries are connected negative pole to positive pole.
A. 
B. 
C. 
D. 
Answer the following statement(s) true (T) or false (F)
1. A person who exerts a 100-N force horizontally in the +x direction on a wall for 10 minutes does positive work on the wall. 2. When an object slides down a frictionless incline, the contact interaction between the object and incline does no work on the object. 3. The interaction does not change the object’s kinetic energy. 4. The interaction does not change the object’s momentum. 5. A heavy ball swings at the end of a chain connected to a hook in the ceiling. Suppose I pull the ball away from its equilibrium position, hold it against my nose (with the chain taut), and then release the ball from rest. The ball swings away and then back toward my face. As long as I don’t move, and the ball is left alone, I can be confident that the ball will not smash my nose.
An electron is accelerated from rest through a potential difference of 50.0 kV. What is the speed of the electron? (c = 3.00 × 108 m/s, e = 1.60 × 10-19 C, mel = 9.11 × 10-31 kg)
A) 1.24 × 108 m/s B) 1.33 × 108 m/s C) 3.24 × 108 m/s D) 3.33 × 108 m/s E) 4.12 × 108 m/s
A meter stick having a rest mass of 1 kg moves past you. Your measurements show it to have a mass of 2 kg and a length of 1 m. How is the stick oriented, as observed by you?
A) perpendicular to its direction of motion B) parallel to its direction of motion C) It is impossible to say anything about the orientation without further information. D) Nonsense--if the stick's mass has increased to 2 kg, then it must be longer than 1 m.