Two wave pulses with equal positive amplitudes pass each other on a string. One is traveling toward the right and the other toward the left. At the point that they occupy the same region of space at the same time
A) constructive interference occurs.
B) destructive interference occurs.
C) a standing wave is produced.
D) a traveling wave is produced.
A
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What would happen if a white dwarf gained enough mass to reach the 1.4 solar-mass white dwarf limit?
A) The white dwarf would explode completely as a white dwarf supernova. B) The white dwarf would collapse in size, becoming a neutron star. C) The white dwarf would undergo a nova explosion. D) The white dwarf would collapse to become a black hole.
A single-turn plane loop of wire with a cross-sectional area 200 cm2 is perpendicular to a magnetic field that increases uniformly from 0.200 T to 2.800 T in 2.20 seconds
What is the magnitude of the induced current if the resistance of the coil is 8.00 ?? A) 2.95 A B) 3.18 A C) 0 A D) 3.18 mA E) 2.95 mA
The most important advantage of CCDs over film is that
A) they can cover larger areas of the sky than film can. B) they record much more light in a given exposure time. C) they record colors better than film can. D) their images never fade, as film can. E) their images do not have to be developed as film does.
The slope of a velocity vs. time graph is the
a. distance. b. velocity. c. acceleration. d. none of the above