A bat, flying at 7.00 m/s toward a wall, emits a chirp at 50.0 kHz. If the wall reflects this sound pulse, what is the frequency of the echo received by the bat? (vsound = 340 m/s)
a. 52.1 kHz
b. 51.1 kHz
c. 50.0 kHz
d. 49.0 kHz
e. 48.6 kHz
a
Physics & Space Science
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An airplane flying with a constant speed flies from a warm air mass into a cold air mass. The Mach number will
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Physics & Space Science
A 0.28-kg stone you throw rises 34.3 m in the air. The impulse the stone receives from your hand while being thrown is
a. 2.7 N s, up. b. 2.7 N s, down. c. 7.3 N s, up. d. 7.3 N s, down. e. 9.6 N s, up.
Physics & Space Science
DNA molecules cannot be altered by chance errors in reproduction
Indicate whether the statement is true or false
Physics & Space Science
If we see two objects that have different colors, the light waves coming from them have different ____________
Fill in the blank(s) with correct word
Physics & Space Science