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A skydiver, mass 80 kg, jumps out of an airplane traveling 150 km/h horizontally at an altitude of 1000 m. When she reaches the ground, her speed is 8.0 m/s. How much energy was dissipated with air resistance during the jump?
A wheel 32.1 cm in diameter accelerates uniformly from 227 rpm to 363 rpm in 5.11 s. How far will a point on the edge of the wheel have traveled in this time
A thin rod (length = 1.762 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. find the magnitude of the angular acceleration of the rod
A sample of an ideal gas is at a temperature of 320 K. The rmsmolecular speed at this temperature is measured as 1631 m/s. Calculate the mass of a molecule of this gas.
Two converging lenses, one with f = 4.5cm and the other with f = 44 cm, are made into a telescope. Assume these lenses are now combined to make a microscope; if the magnification needs to be 25 X, how long would the microscope be?
A uniform cylinder whose mass is 50 kg and radius is 0.20 m is mounted so that it turns without friction on its axis, which is fixed. The cylinder is driven by a belt that wraps around its perimeter and exerts a constant torque. At t = 0, the cyli..
Two blocks of identical wood sit on slippery (no friction) ice. You fire a bullet at each block. At the first block, you fire a metal bullet that impales itself in the block. At the second block, you fire an equal-mass, equal-speed rubber bullet that..
Two charged bodies exert a force of 0.190 N on each other. If they are moved so that they are one-fifth as far apart, what force is exerted
Calculate the radius of the path, direction of the force experienced by the electron and the path of the electron through the magnetic field.
The driver of a 1350 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 19.5 m. Find the net work done on the car
A spherical balloon of volume 3.94 103 cm3 contains helium at a pressure of 1.15 105 Pa. How many moles of helium are in the balloon
A conducting cubic box has all faces at zero potential. Side of the box has length a. The box is filled with a total charge Q distributed unifomly inside the box. Find the potential at points inside the box
A coal-fired plant generates 600MW of electric power. Theplant uses 4.8 X 10^6 kg of coal each day and the heat ofcombustion is 3.3 X 10^7 J/kg. What is the Carnot efficiency
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