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Two uniform solid cylinders, each rotating about its central (longitudinal) axis, have the same mass of 4.90 kg and rotate with the same angular speed of 264 rad/s, but they differ in radius. What is the rotational kinetic energy of (a) the smaller cylinder, of radius 0.358 m, and (b) the larger cylinder, of radius 0.781 m?
demonstrating the low melting point of gallium metal 29.8degc an instructor removes a 1.00 kg sample of the metal from
The resistance of a bagel toaster is 18 . To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
A circle of rope of total mass 1kg and radius 1m is spinning at angular velocity 2.5 rad/sec about an axis through the center of the circle
Two particles with Q1 = 50 µC and Q2 = 79 µC are initially separated by a distance of 2.4 m, What is the change in the electric potential energy
A 98 kg waterskier is being pulled at a constant velocity. The horizontalpulling force is 270N. Find the magnitude of the total resistive force exerted on the skier by the waterand air
Two automobiles, each of mass 900 kg, are moving at the same speed, 15 m/s, when they have an inelastic collision.(a) In what direction and at what velocity does the wreckage move if one car was driving north and one south? (b) In what direction a..
A diving board of length 3.00m is supported at a point 1m from the end, and a diver weighing 520 m stands at the free end . The diving board is of uniform cross section and weighs 270m.
A large tank of water is full and has a depth of 10.0 m. What is the pressure at the bottom of the tank
A scuba diver at a depth of 42.0 m below the surface of the sea off shores of Panama City, where the temperature is 7 °C, releases an air bubble with volume 18 cm3.
A skier, weighing 453 n, is skiing down a slope that has an incline of 29 degrees above the horizontal. Compute the acceleration of the skier (coefficient of kinetic friction between the skis and snow is 0.21)
An object falling under the pull of gravity experiences a frictional force of air resistance. find the terminal speed that the object reaches while falling
An explosive charge imparts a velocity of 10,350 feet per second to a mortar as it exits the muzzle of mortar. If the mortar is elevated at 80 degrees what are the horizontal and vertical velocities on the mortar shell.
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