Physics, 09.10.2019 04:20 iamabeast51
Aweather emergency siren is mounted on a tower, 129 m above the ground. on one hand, you would like to make the siren very loud so that it will warn as many people as possible. on the other hand, safety regulations prohibit you from exceeding an intensity level of 111 db for workers standing on the ground directly below the siren. assuming that the sound is uniformly emitted, what is the maximum power that the siren can put out?
Answers: 3
Physics, 22.06.2019 08:30
Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.
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Physics, 22.06.2019 09:00
In the first law of thermodynamics, triangle e=q-w, what does q stand for
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Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
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Aweather emergency siren is mounted on a tower, 129 m above the ground. on one hand, you would like...
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