Physics, 24.04.2020 17:03 airsealands
3. A rock band playing an outdoor concert produces sound at 120 dB 5.0 m away from their single working loudspeaker. Ignore sound reflected from walls and other objects and consider sound originating directly from the speakers. a. What is the sound intensity level 35 m from the speaker? b. What is the delay between the time the sound leaves the speaker and arrives at this point on a very cold day (0 degrees Celsius)? A hot day (40 degrees Celsius)? c. How far away from the speaker should you stand to ensure the intensity does not exceed 80 dB, and what is the intensity at this location? 81dB, and what is the intensity at this location?
Answers: 3
Physics, 22.06.2019 09:00, KitKat22Rose9
What is a possible result of higher air temperature caused by global warming
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Physics, 22.06.2019 12:10, JN02
Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.
Answers: 1
Physics, 23.06.2019 11:30, shadowselena63
A: all waves on the electromagnetic spectrum travel at the same speed in a vacuum. the speed of these waves in a vacuum is 3x108 m/s. as the wavelength of a wave doubles, how does the speed and frequency of the wave change?
Answers: 1
3. A rock band playing an outdoor concert produces sound at 120 dB 5.0 m away from their single work...
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