According to Heisenberg's uncertainty principle, which of the following particles is the most predictable, in other words which has the smallest overall uncertainties as to its position and velocity?
A) electron
B) proton
C) neutron
D) hydrogen atom
E) gold atom
E
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During a total lunar eclipse, which of the following are true? I. The photosphere of the sun is obscured by the moon. II. The moon is in Earth's umbra. III. The moon is new. IV. The moon is full
a. I, III b. II, IV c. I, II, III d. II, III e. I, II, III, IV
Which of the following represents a case in which you are not accelerating?
A) driving in a straight line at 100 kilometers per hour B) going from 0 to 100 kilometers per hour in 10 seconds C) slamming on the brakes to come to a stop at a stop sign D) driving 100 kilometers per hour around a curve
Pulsars are rotating white dwarfs.
Answer the following statement true (T) or false (F)
Two objects attract each other gravitationally. If the distance between their centers is cut in half, the gravitational force
A) is cut to one fourth. B) is cut in half. C) doubles. D) quadruples E) remains the same