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An Automobile wheel and tire having a diameter of 93.7 cm and a mass of 43.9 kg is bolted to a test machine. The center of the tire is 3.50 m above a level concrete floor. An unbalanced force of 3687 N is applied for 16.7 s at a point 6.58 cm from the center of the tire. There are 191.5 NM of torque due to friction in the test machine that one must ocercome to accelerate the wheel and tire. The center of gravity of a 47.6 g stone lodged in the tread of teh tire is 46.8 cm from the center of teh tire. The force of friction between the stone and tread is 398.34 N. Assume no air friction is present in this problem.
Two seconds after the stone releases from the tire, it makes a perfectly inelastic collision with a 29.7 g glob of waz that is at the maximum height of a vertical projection. What is the velocity of the masses after the collision? What percent of Kenetic energy is lost in this collision? The stone is located at teh very bottom of the tire prior to teh application of the force.
Starting with an initial speed of 5.00 m/s at a height of 0.335 m, a 1.50-kg ball swings downward and strikes a 4.60-kg ball that is at rest, How high does each ball swing after the collision
a diverging lens has a focal length of 50 a source of light is placed 100 cm in front of lens in front of the lens. where will the image be formed
In a vacuum chamber the pressure is lowered to 1.0 x 10-10 mm Hg. how many molecules are in 1 cm3 in this chamber
A 69-kg lumberjack stands at one end of a 409-kg floating log, as shown in the figure. Both the log and the lumberjack are at rest initially. calculate the lumberjacks speed relative to the shore
Air isn't a perfect electric insulator, but it has a very high resistivity of 3x10^13 omega*m. what fraction of the charge will flow across the air gap
A meter stick supported at the 50 cm mark has masses of 300 g & 200 g hanging from it at the 10-cm & 60-cm mark, respectively. Where should we hang a third, 400-g mass to keep the meter stick balanced?
How various g's of acceleration does the astronaut experience when the device is rotating at top speed? Each 9.80 m/s^2 of acceleration is 1 g.
An air-filled toroidal solenoid has a mean radius of 15.0 and a cross-sectional area of 5.02, What is the least number of turns that the winding must have
Gillian buys a pendulum clock at a discount store and discovers when she gets it home that it loses minutes each day.
A boat has a mass of 6800 kg. Its engines generate a drive force of 4050 N, due west, while the wind exerts a force of 860 N, What is the magnitude and direction of the boat's acceleration
Velocity and time for the moving particle.
An insulated Thermos contains 138cm3 of hot coffee at 95 °C. You put a 12g ice cube at its melting point to cool the coffee. By how numerous degrees has your coffee cooled once the ice has melted and equilibrium is reached.
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