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A Carnot air conditioner maintains the temperature in a house at 294 K on a day when the temperature outside is 308 K. What is the coefficient of performance of the air conditioner?
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. How long is he in the air
A bungee jumper (m = 66.00 kg) tied to a 48.00 m cord, leaps off a 78.00 m tall bridge. What size impulse is exerted on the bungee jumper while the cord stretches
determine the upward force on an airplane's wing if the average flow speed of air is 192 m/s above the wing and 164 m/s below the wing. The density of the air is 1.5 kg/m3 and the area of each wing surface is 26 m2.
A 19 g bullet is shot into a 5270-g wooden block standing on a frictionless surface. The block, with the bullet in it, acquires a velocity of 2.4 m/s. compute the velocity of the bullet before striking block.
An airplane pilot fell 355 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.3 m deep, Estimate the work done by the snow in bringing him to rest
A 115 granite cube slides down a 35 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 235 steel cube at rest.
A thin uniform rod (mass = 1.95 kg) swings about an axis that passes through one end of the rod, What is the length of the rod
Perform the following unit conversions for parts (A) in the table below (B) through. Show your work using a step-wise approach.
Illustrate what is the speed of the three coupled cars after the collision? How much kinetic energy is lost in the collision?
an x-ray photon with wavelength 15.0 pm is scattered at 84.0 degrees by an electron. What is the resulting kinetic energy of the electron
A thin, horizontal copper rod is 1.10 m long and has a mass of 203 g. What is the minimum current in the rod
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
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