According to current evidence, Pluto is best explained as ________
A) an escaped moon of Jupiter or Saturn
B) a large member of the Kuiper belt
C) a terrestrial planet that is surprisingly far from the Sun
D) a very small jovian planet
B
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If the distance from a point source of EM radiation is doubled, the intensity is
A. doubled B. the same as it was before. C. reduced by a factor of four. D. increased by a factor of four. E. cut in half.
______________materials are made of at least two separate materials that maintain their identity in the combined material.
Fill in the blank(s) with the appropriate word(s).
Suppose that at a certain time a quanton has the (unrealistic) wave function shown below. If we were to perform an experiment to locate the quanton, what is the probability that the result is in the range -2 nm ? x ? 0? 
A. -1/4 B. -1/6 C. 1/4 D. 1/6 E. 1/3
If I0 = 10?12 W/m2 is the threshold of hearing, a sound with intensity I1 = 10?11 W/m2 will give a certain decibel level. Suppose a new sound has an intensity I2 = 2I12/I0 . What is the new decibel level?
a. 2.3 dB b. 23 dB c. 100 dB d. it will square the decibel level e. 1.0 dB