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miv72 [106K]
2 years ago
11

PLEASE HELP AND I WILL GIVE BRAINLIEST

Physics
2 answers:
san4es73 [151]2 years ago
3 0

Answer:

A: Sound waves produce an echo

Explanation:

because the cup is a hard smooth surface you can hear the voice

Veseljchak [2.6K]2 years ago
3 0

Answer:

Answer is D

Explanation:

The sound travels along the string as a longitudinal wave and ultimately vibrates the bottom of the receiving cup. The cup transmits the sound into the air around the listener's ear, allowing her to hear the speaker.

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By Newton's second law, the net force on the object is

∑ <em>F</em> = <em>m</em> <em>a</em>

∑ <em>F</em> = (2.00 kg) (8 <em>i</em> + 6 <em>j</em> ) m/s^2 = (16.0 <em>i</em> + 12.0 <em>j</em> ) N

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marusya05 [52]

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