Answer the following statement(s) true (T) or false (F)
1. A positron will travel roughly as far through a given material as an electron with the same energy.
2. A radioactive sample’s activity A at a given time is directly proportional to the number of nuclei that have already decayed.
3. Combining any two nuclei should release energy, because doing this increases the number of strong inter nuclear bonds between nucleons.
4. A terrorist organization seeking to construct a nuclear bomb would likely be more interested in obtaining 
U than 
Pu.
5. Exposure to radiation of any kind for long enough will tend to make an object radioactive.
1. TRUE
2. FALSE
3. FALSE
4. TRUE
5. FALSE
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Suppose that at a certain instant of time, the wave function shown below describes a certain quanton’s state. If we were to perform an experiment to locate the quanton, what would be the least likely result or results within the graph’s range? 
A. 
B. 
C. 
D. 
You obtain a 100. W lightbulb and a 50. W light bulb. Instead of connecting them in the normal way, you devise a circuit that places them in series across normal household voltage. Which statement is correct?
A) Both bulbs glow at the same increased brightness. B) The 100-W bulb glows brighter than the 50-W bulb. C) Both bulbs glow at the same reduced brightness. D) The 50-W bulb glows more brightly than the 100-W bulb.
Our textbook discusses the cosmic calendar, a model of the history of the universe scaled to a single year. The length of time represented by one month on this cosmic calendar is therefore
A) about ten million years. B) about one million years. C) about one billion years. D) about ten billion years. E) about 1000 years.
A 3.00-kg stone is dropped from a 39.2 m high building. When the stone has fallen 19.6 m, the magnitude of the impulse it has received from the gravitational force is
a. 9.80 N s. b. 19.6 N s. c. 29.4 N s. d. 58.8 N s. e. 118 N s.