Physics, 02.04.2020 03:33 jayleneeurich
A special device can transmit sound out of phase from a noisy jackhammer to its op- erator using earphones. over the noise of the jackhammer, the operator can easily hear your voice while you are unable to hear his. why?1. these devices reduce jackhammer noise by using destructive interference to cancel the noisy sound, so he can hear your voice clearly.2. the operator's earphones are connected to your microphone, so he can hear your voice clearly.3. the operator's earphonex amplifies your voice, so he can hear your voice clearly.4. the operator's earphones change the fre- quencies of your voice, so he can hear your voice clearly.
Answers: 2
Physics, 21.06.2019 18:00
Alivestock company reports that the mean weight of a group of young steers is 1100 pounds with a standard deviation of 93 pounds. based on the model n(1100,93) for the weights of steers, what percent of steers weigh a) over 1050 pounds? b) under 1300 pounds? c) between 1150 and 1250 pounds?
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Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.
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A special device can transmit sound out of phase from a noisy jackhammer to its op- erator using ear...
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