A source emits sound at a fixed constant frequency f.If you run towards the source, the frequency you hear is
a. the same as f. b. higher than f.
c. lower than f. d. unrelated to f.
b
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Consider a vibrating string that makes a sound wave that moves through the air. As the guitar string moves up and down, the air molecules that are a certain horizontal distance from the string will move
a. up and down. b. toward and away from the guitar string. c. back and forth along the direction of the length of the string. d. in circles around the guitar string.
The downslope movement of an unbroken block of rock or soil, which leaves a curved depression on the slope, is called a(n) ______________
Fill in the blank(s) with correct word
Galileo found the rotation period of the Sun was approximately:
A) a day. B) a week. C) a month. D) three months. E) a year.
An 80.0-kg object is falling and experiences a drag force due to air resistance. The magnitude of this drag force depends on its speed, v, and obeys the equation What is the terminal speed of this object?
A) 6.45 m/s B) 72.2 m/s C) 34.2 m/s D) 12.6 m/s E) 47.3 m/s