During the period of one day, the number of high tides on the East or West coast is usually
A) five.
B) one.
C) two.
D) four.
E) three.
C
Physics & Space Science
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For all transparent material substances, the index of refraction
A) is less than 1. B) is greater than 1. C) is equal to 1. D) is less than or equal to 1. E) is greater than or equal to 1.
Physics & Space Science
In a 1-g gravitational field, 1 second after turning on a flashlight its beam will curve beneath a perfectly straight line by
A) less than 4.9 m. B) 4.9 m. C) more than 4.9 m.
Physics & Space Science
The reason why the sky is blue is best explained by
a. the greenhouse effect. b. Rayleigh scattering. c. the dew point. d. auroras.
Physics & Space Science
Which are bigger—Celsius degrees or Fahrenheit degrees?
a. Fahrenheit b. Celsius c. Neither—they are the same size. d. This is a nonsensical comparison.
Physics & Space Science