Blue light travels more slowly through glass than red light does
Indicate whether the statement is true or false
T
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Glow-in-the-dark materials exhibit the phenomenon called
a. phosphorescence. b. simulated absorption. c. fluorescence. d. stimulated emission.
Proportional Reasoning: A car is able to stop in a distance d. Assuming the same braking force (and therefore the same acceleration), what distance does this car require to stop when it is traveling twice as fast?
A. d
B. 2d
C. 
d
D. 4d
E. 2
d
An ideal solenoid having a coil density of 5000 turns per meter is 10 cm long and carries a current of 4.0 A. What is the strength of the magnetic field at its center?
A) 13 mT B) 3.1 mT C) 6.2 mT D) 25 mT
While the gondola is rising at a speed of 2.0 m/s, a passenger in a balloon-supported gondola throws a small ball down at a speed of 5.0 m/s relative to his body. A person who measures the ball's velocity at the instant of release will find that the ball's velocity relative to the ground at that instant is
A. 2.0 m/s, up. B. 3.0 m/s, down. C. 3.0 m/s, up. D. 5.0 m/s, down. E. 12.8 m/s, down.