Recoil is noticeable if we throw a heavy ball while standing on a skateboard. If instead we go through the throwing motion but hold onto the ball, without friction effects our net recoil will be
A) zero.
B) the same as before.
C) small, but noticeable.
Answer: A
Physics & Space Science
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Fill in the blank(s) with correct word
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Just as a sustained flow of water in a hydraulic circuit needs a pump, the flow of charge in an electric circuit needs
A) current. B) voltage. C) resistance.
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An object thrown upward experiences free fall
Indicate whether the statement is true or false
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A 4.0-g string is 0.36 m long and is under tension. The string vibrates at 500 Hz in its third harmonic. What is the wavelength of the standing wave in the string?
A) 0.24 m B) 0.36 m C) 0.54 m D) 0.72 m E) 0.90 m
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