Light of wavelength 687 nm is incident on a single slit 0.75 mm wide. At what distance from the slit should a screen be placed if the second dark fringe in the diffraction pattern is to be 1.7 mm from the center of the diffraction pattern?
A) 1.1 m B) 1.9 m C) 0.93 m D) 0.47 m E) 0.39 m
C
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Addition by 1. Components: Vector 
= 4.00 m points eastward and vector 
= 3.00 m points southward. The resultant vector 
+ 
is given by
A. 5.00 m at an angle of 36.9° south of east. B. 5.00 m at an angle of 53.1° south of east. C. 5.00 m at an angle of 71.6° south of east. D. 5.00 m at an angle of 18.4° south of east. E. 5.00 m at an angle of 26.6° south of east.
Force on a Moving Charge: A negatively-charged particle moves across a constant uniform magnetic field that is perpendicular to the velocity of the particle. The magnetic force on this particle
A. causes the particle to speed up. B. causes the particle to slow down. C. causes the particle to accelerate. D. is in the same direction as the particle's velocity. E. is opposite the direction of the particle's velocity.
If you double the amplitude of a harmonic oscillator, the object’s maximum speed does what?
A. Decreases by a factor of 2.
B. Decreases by a factor of 
.
C. Does not change.
D. Increases by a factor of .
E. Increases by a factor of 2.
F. Changes by some other factor (specify).
A charge Q is positioned at the center of a sphere of radius R. The flux of the electric field through the sphere is equal to ?
If the charge Q is now placed at the center of a cube the flux of the electric field through the surface of the cube is equal to A) ?/2. B) ?. C) 2?. D) 0. E) The value of the flux depends on the dimensions of the cube.