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A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 13 degree incline. His speed at the bottom is 13 m/s. What is the length of the incline? How long does it take him to reach the bottom?
A uniform plank, 10.0 m long and weighing 200 N, is supported horizontally by a brick at one end and an egg at the other. What is the force exerted on the plank by the brick
selzer estimates the total cost of servicing the warranties will be $120,000 for 2 years. Estimate revenues earned on basis of costs incurred an estimated costs.
As a function of time t, force component Fx that acts on a 3.00 kg ice block that can move only along the x axis. At t=0, the block is moving in positive direction of the axis, with a speed of 3.0 m/s. what are its (a) speed and (b) direction of trav..
Calculate the linear acceleration of a car, the 0.310 m radius tires of which have an angular acceleration of 15.0 rad/s2. Assume no slippage. What is the final velocity of the car
q1. a 46 kg girl is standing on a 145 kg plank. the plank initially at rest is free to slide on a frozen lake which is
A 200 cm rope under a tension of 80 N is set into oscillation. The mass density of the rope is 120 g/cm. What is the frequency of the first harmonic mode
Water at ground level is moving at a speed of 1.20 m/sec in a pipe at a pressure of 850 kPa. What is the pressure of the water on the fourth floor
A phonograph record accelerates from rest to 47.4 rpm in 4.00 s. How many revolutions does it go through in the process
A 66 kg solid sphere with a 14 cm radius is suspended by a vertical wire. What is the period of the oscillations
Nichrome wire of cross-sectional radius 0.753 mm is to be used in winding a heating coil, Find the required resistance of the coil
A projectile is fired with an initial speed of 36.2m/s at an angle of 41.1 degrees above the horizontal on a long flat firing range. determine maxiumum height reached by projectile
Calculate the energy content of 1 kg of natural uranium assuming complete fission. Estimate an average energy per fission. Compare this to the energy in 1 kg of coal (reference all values assumed).
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