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A piano wire with mass 3.00 g and length 80.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and amplitude 1.6 mm travels along the wire.
(a) Calculate the average power carried by the wave.
(b) What happens to the average power if the wave amplitude is halved?
An object has a volume of 0.25 m^3 and weighs 3000 N. What will be its apparent weight when submerged in water
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A gas expands from I to F. The energy added to the gas by heat is 442 J when the gas goes from I to F along the diagonal path. What is the change in internal energy of the gas.
Suppose you have a near-point distance of 16 cm. The angular resolution of the eye is determined by diffraction, What is the smallest object your bare eye can resolve
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A 1.00 V potential difference is maintained across a 9.0 resistor for a period of 16.0 s. What total charge passes through the wire in this time interval
Pacemaker Batteries Pacemakers designed for long-term use commonly employ a lithium-iodine battery capable of supplying 0.42A-h of charge. what is the expected lifetime of the device
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A beam of light crosses the interface between two media with an angle of incidence of 34.0° and an angle of refraction of 24.6°. What is the index of refraction of the first medium
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