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A transverse periodic wave is established on a string. The wave is described with the expression: y = 0.05 sin(20.0x - 2nft) Where y is in meters when x and t are in meters and seconds, respectively. If the wave travels by a speed of 20.0m/s, what is its frequency, f?
A particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 m/s in the x direction along the line y = 5. What is its angular momentum (in kg×m2/s) relative to the origin
A carpenter tosses a shingle horizontally off an 8.8m--high roof at 8.0m/s , How far does it move horizontally
A small steel wire of diameter 1.0mm is connected to an oscillator and is under a tension of 5.7N. What is the power output of the oscillator, assuming that the wave is not reflected back
A standing wave is set up by reflecting radio waves from a large, flat metal dish. Where are the corresponding maxima in the magnetic field
a cylindrical shell of radius 9 cm and length 297 cm has its charge density uniformly distributed on its surface. the
the electron beam emerging from a certain high-energy electron accelerator has a circular cross section of radius 1.45
At a fabrication plant, a hot metal forging has a mass of 78 kg and a specific heat capacity of 430J/(kg·°C). To harden it, the forging is immersed in 710kg of oil that has a temperature of 32°C and a specific heat capacity of 3000 J/(kg·°C) .
Sitting on a couch watching the Sochi Olympics, José is eating an In-N-Out Double-Double Cheeseburger with onions. If sitting on the couch while eating burns approximately 100 kcal an hour
A 7 kg ball has a velocity of 16 m/s. How much work would be required to stop the ball
One of the great difficulties in landing on Venus is dealing with the crushing pressure of the atmosphere, How much force would the lander have to withstand on the earth
A particle with a charge of -60.0 nC is placed at the center of anon conducting spherical shell of inner radius 20.0 cm and outer radius 27.0 cm. The spherical shell carries charge by a uniform density of -2.95 µC/m3. A proton moves in acicular orbit..
A father pushes his child on a swing so that the child's speed is 9.00 m/s at the lowest point of his path. What force does the child exert on the seat if his mass is 18.0 kg
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