Blue light travels more slowly through glass than red light does
Indicate whether the statement is true or false
T
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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
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.
Glow-in-the-dark materials exhibit the phenomenon called
a. phosphorescence. b. simulated absorption. c. fluorescence. d. stimulated emission.
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