The fact that we can only calculate probabilities for values of physical quantities in quantum measurements means that
a. radiation and matter are not described by mathematical relations between measurements.
b. the probabilities cannot be calculated from mathematical relationships.
c. the results of physical measurements bear no relationship to theory.
d. the average values of a large number of measurements correspond to the calculated probabilities.
e. the average of the values calculated in a large number of different theories corresponds to the results of a measurement.
D
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Lenz's Law: According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit.
A. True B. False
What happens when matter collides with anti-matter?
A) The two particles repel each other, and they fly apart. B) The two particles destroy each other, and create photons. C) The two particles attract each other, and form a neutral atom.
A vase sits at rest on a table. If the action force is Earth pulling downward on the vase, the reaction force is the
A) table pushing upward on the vase. B) vase pulling upward on Earth. C) vase pulling upward on both the table and Earth. D) none of the above
In the figure, if Q = 30 ?C, q = 5.0 ?C, and d = 30 cm, what is the magnitude of the electrostatic force on q?
a.
15 N
b.
23 N
c.
zero
d.
7.5 N
e.
38 N