In quantum theory, what happens if an electron's wave packet is squeezed into a smaller region of space?
A) You decrease the electron's uncertainty in velocity and also decrease its uncertainty in position.
B) You increase the electron's uncertainty in position while decreasing its uncertainty in velocity.
C) You decrease the electron's uncertainty in position while increasing its uncertainty in velocity.
D) You decrease the electrons uncertainty in velocity while leaving its uncertainty in position unaffected.
E) You decrease the electrons uncertainty in position while leaving its uncertainty in velocity unaffected.
C
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A 2.00-kg mass oscillates on the end of a spring with spring constant 12.0 N/m
Its amplitude of oscillation decreases from 10.0 cm to 1.0 cm in 2.00 s. What is the angular frequency at which this oscillator will have its peak amplitude? A) 7.28 s-1 B) 0.622 s-1 C) 2.45 s-1 D) 2.16 s-1 E) 0.311 s-1
A 5.00 kg mass is located at (2.00 m, 0.00 m, 0.00 m) and a 3.00 kg mass is located at (0.00 m, 4.00 m, 0.00 m). The center of gravity of the system of masses is
A. (1.25 m, 1.25 m, 0). B. (1.50 m, 1.50 m, 0). C. (1.25 m, 1.50 m, 0). D. (1.50 m, 1.25 m, 0). E. (1.00 m, 1.00 m, 0).
You are experimentally determining the critical angle for a novel transparent solid whose index of refraction is less than that of water (n=1.33) but greater than that of air (n=1.00). Your experimental method involves work underwater in which you observe whether there is any transmitted ray at the water/solid interface as you vary the angle of incidence on the solid surface. When your device reaches an incident angle of 53 degrees you find that the transmitted ray vanishes. What is the index of refraction for this new solid?
A. 1.16 B. 0.57 C. 1.06 D. 0.53
When an object is polarized, it
A. must contain more positive charge than negative charge. B. must contain more negative charge than positive charge. C. will have a separation of positive and negative charge. D. must be illuminated by polarized light. E. must be made of metal.