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A boat with a horizontal tow rope pulls a water skier. She skis off to the side, so the rope makes an angle of 14.0 with the forward direction of motion. If the tension in the rope is 190 , how much work does the rope do on the skier during a forward displacement of 310?
A spring can be compressed 2.0 cm by a force of 329 N. A block with a mass of 9.0 kg is released from rest at the top of a frictionless incline as shown. What is the speed of the block just as it touches the spring
Two circular current loops are located at z = +R/2 and z = ?R/2, parallel to the xy-plane and centered at the z-axis. Derive a formula for the magnetic field at an arbitrary point on the z-axis. Note by symmetry that B(x) = Bz(z) k
Unpolarized light with an intensity of 650 W / m2 is incident on a polarizer with an unknown axis. What is the angle between the axes of the polarizers
Assuming that the magnetic field of the earth has magnitude of 5x10^-5 T at the equator and is parallel to the surface of the earth and that the current in the wire flows toward east
A 1500 {rm kg} wrecking ball hangs from a 20 {rm m} long cable. The ball is pulled back until the cable makes the angle of 17.0^circ with vertical.
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
A simple of helium gas occupies 5 liters at 22degree C and a gauge pressure of 200,000 pascals. What is the mass of the gas
A lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm. (a) How tall is the lamp's image if the lamp is a distance of 26.5 cm from the mirror (include sign if negative)
A certain automobile engine is performing work at the rate of 33900 W (45 hp) with an efficiency of 27%
A doubly charged ion is accelerated to an energy of 31.5 keV by the electric field, What is the electric field strength between the plates in V/m
it takes 100 minutes for a middle-aged physics professor to ride his bicycle up the road to Alpe d'Huez in France, What is the bicyclists average power output
in a vacuum, a certain light has a wavelength ?0 = 589 nm and travels at speed c = 3.00x10^8 m/s. What is its speed if traveling in sodium chloride
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