What happens to a particle's wave packet when a highly accurate position measurement is performed?
A) It suddenly makes a transition into a state of smaller uncertainty in position, with no change in its uncertainty in velocity.
B) It makes a gradual transition to a state of greater uncertainty in position but smaller uncertainty in velocity.
C) It makes a gradual transition to a state of smaller uncertainty in position and greater uncertainty in velocity.
D) It suddenly makes a transition into a state of greater uncertainty in position but smaller uncertainty in velocity.
E) It suddenly makes a transition into a state of smaller uncertainty in position and greater uncertainty in velocity.
E
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Indicate whether the statement is true or false
A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope. The count rate 24 minutes later is 1,000 counts per minute. The half-life of the radioisotope is
a. 3 minutes. b. 4 minutes. c. 6 minutes. d. 8 minutes. e. 12 minutes.
The diagrams below show two uniformly charged spheres. The charge on the right sphere is 3 times as large as the charge on the left sphere. Which force diagram best represents the magnitudes and directions of the electric forces on the two spheres?
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