Pascal's Principle: A 13,000-N vehicle is to be lifted by a 25-cm diameter hydraulic piston. What force needs to be applied to a 5.0 cm diameter piston to accomplish this? Assume the pistons each have negligible weight.
A. 260 N
B. 520 N
C. 2600 N
D. 5200 N
Answer: B
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Answer the following statement(s) true (T) or false (F)
1. The units of the electric field 
are N/C. We can alternatively say the field has units of V/m.
2. A single particle can have potential energy.
3. Even if we define the potential to be zero at infinity, the potential created by a charge distribution can be negative at another point.
4. Consider a point P midway between two particles, one with charge -q and one with charge q. The electric field vector at point P is zero.
The density of interstellar dust is very low, yet it still blocks starlight because:
A) it is so cold it absorbs higher energy photons. B) there is 100 times more opaque gas than dust present in the ISM. C) the dust particles are about the same size as the light waves they absorb. D) the dust particles are irregular in shape. E) ice particles reflect all light back toward their stars, not toward us.
How many values can the magnetic quantum number have in a hydrogen atom for which the orbital angular momentum quantum number is equal to 8?
A) 5 B) 17 C) 15 D) 8 E) 9
A rock is thrown directly upward from the edge of a flat roof of a building that is 56.3 meters tall. The rock misses the building on its way down, and is observed to strike the ground 4.00 seconds after being thrown
Take the acceleration due to gravity to have magnitude 9.80 m/s2 and neglect any effects of air resistance. With what speed was the rock thrown?