In quantum theory, a "wave packet"
A) represents many particles, each one having both a specific position and a specific velocity.
B) represents one particle having a range of possible positions but a specific velocity.
C) represents one particle having a range of possible positions and a range of possible velocities.
D) represents many particles, each one having a range of possible positions and a range of possible velocities.
E) represents one particle having a specific position but a range of possible velocities.
C
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Meters: A galvanometer has an internal resistance of 100 ? and deflects full-scale at 2.00 mA. What size resistor should be added to it to convert it to a millivoltmeter capable of reading up to 400 mV?
A. 50.0 ? in series B. 50.0 ? in parallel C. 100 ? in series D. 100 ? in parallel
This photograph shows the Space Shuttle orbiting about 300 kilometers above Earth's surface. What is the significance of the whitish glow around the Shuttle's tail?
A) It shows that Earth's atmosphere still exists, though thinly, at this altitude. B) It shows that the Space Shuttle can cause auroras along its orbit. C) It shows that the Shuttle was firing its engines at the time this photo was taken. D) It shows that the Shuttle lights work in space as well as they work on the ground.
If you lie on a bed of nails your back will encounter pressure due to contact with the nails. Nail pressure on your back will be less if the bed has
A) fewer nails. B) more nails. C) both of the above D) none of the above
A particle (m = 20 mg, q = ?5.0 ?C) moves in a uniform electric field of 60 N/C in the positive x direction. At t = 0, the particle is moving 30 m/s in the positive x direction and is passing through the origin. Determine the maximum distance beyond x = 0 the particle travels in the positive x direction
a. 25 m b. 20 m c. 15 m d. 30 m e. 60 m