A 1500-W heater is connected to a 120-V line for 2.0 hours. How much heat energy is produced?
A) 11 MJ B) 3.0 kJ C) 0.18 MJ D) 1.5 kJ
A
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Double-Slit Interference: Coherent light of wavelength 540 nm passes through a pair of thin slits that are 3.4 × 10-5 m apart. At what angle away from the centerline does the second bright fringe occur?
A. 1.8° B. 3.7° C. 4.3° D. 1.5° E. 5.0°
Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart
Half way between the two plates the electric field has magnitude E. If the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates? A) 4E B) 2E C) E D) 0 E) E/2
When holes are drilled through the wall of a water tower, water will spurt out with the greatest speed from the hole closest to
A) the bottom of the tower. B) the middle of the tower. C) the top of the tower. D) all the same
Compared with a neutron bouncing off a carbon nucleus, a neutron bouncing off an iron nucleus loses
A) less speed. B) more speed. C) the same amount of speed.