When light goes from one material into another material having a HIGHER index of refraction,
A) its speed, wavelength, and frequency all decrease.
B) its speed and wavelength decrease, but its frequency stays the same.
C) its speed decreases but its wavelength and frequency both increase.
D) its speed decreases but its frequency and wavelength stay the same.
E) its speed increases, its wavelength decreases, and its frequency stays the same.
Answer: B
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Ten seconds after starting from rest, a car is moving at 40 m/s. What is the car's acceleration?
A) 0.25 m/s2 B) 2.8 m/s2 C) 4.0 m/s2 D) 10 m/s2 E) 40 m/s2
In ultrasound the __________ of the sound is much greater than in normal sound
Fill in the blank(s) with correct word
The upper boundary of the zone of saturation is called the ______________
Fill in the blank(s) with correct word
A positively charged ping pong ball is sitting stationary on the floor in the center of a room. There is also a constant, uniform magnetic field in the room that points toward the ceiling. If I now start the ball rolling toward the back of the room, the resultant motion of the ball, as observed from the ceiling, will be
A. a diagonal straight line toward the left back corner of the room. B. a straight line in the original direction of motion. C. a diagonal straight line toward the right back corner of the room. D. a horizontal, counterclockwise circle. E. a horizontal, clockwise circle.