4. A light string is attatched to a heavy rope, and the whole thing is pulled tight. A wave is sent along the light string. When it hits the heavy rope, compared to the wave on the string, the wave that propagates along the rope has the same (A) frequency (B) wavelength (C) both frequency and wavelength (D) neither?
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Physics, 21.06.2019 19:30
Act has a 1200: 5 or 240: 1 turns ratio. it is short circuited. what is the maximum current at 1200a primary if we put a 100ohm resistor across the secondary end of the ct. use it as current source circuit.
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Physics, 22.06.2019 10:30
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
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Physics, 22.06.2019 11:30
Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?
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4. A light string is attatched to a heavy rope, and the whole thing is pulled tight. A wave is sent...
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