Physics, 16.12.2021 03:10 nathancikra
Mr. and Mrs. Tew attended this summer band concert to hear their son play his violin. When they sat down in their seats, they noticed that there were dead moments. That is, places in the music when they could not hear anything! They decided to move and sit directly in front of the band in the third row. How can you explain the dead spots they experienced?
A) Some sound waves cancelled each other out.
B) Sound waves reflected off of the ceiling and walls.
C) The sound waves underwent constructive interference.
D) Some of the students stopped playing for a few seconds.
Answers: 3
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A1500 w electric heater is plugged into the outlet of a 120 v circuit that has a 20 a circuit breaker. you plug an electric hair dryer into the same outlet. the hair dryer has power settings of 600 w, 900 w , 1200 w, and 1500 w. you start with the hair dryer on the 600 w setting and increase the power setting until the circuit breaker trips. under what setting does the circuit breaker trip.
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Mr. and Mrs. Tew attended this summer band concert to hear their son play his violin. When they sat...
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