Physics, 08.04.2020 23:30, quetzaliescalona
Ignoring reflection at the air–water boundary, if the amplitude of a 1 ghz incident wave in air is 20 v/m at the water surface, at what depth will it be down to 1 μv/m? water hasμr
Answers: 2
Physics, 22.06.2019 17:30, RegencySlayer5304
Alarge cruise ship of mass 7.00 ✕ 107 kg has a speed of 11.6 m/s at some instant. (a) what is the ship's kinetic energy at this time? (b) how much work is required to stop it? (give the work done on the ship. include the sign of the value in your answer.) (c) what is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.00 km?
Answers: 2
Physics, 22.06.2019 23:00, rtryf57rfgth
Which wave is the result of amplification and produces a louder sound
Answers: 1
Physics, 23.06.2019 03:10, stotherow5
You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.
Answers: 2
Ignoring reflection at the air–water boundary, if the amplitude of a 1 ghz incident wave in air is 2...
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