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A student sits at rest on a piano stool that can rotate withoutfriction. The moment of inertia of the student -stool system is4.1kg.m2. A second student tosses a 1.5-kg mass with aspeed of 2.7m/s to the student on the stool, who catches it at adistance of 0.40m from the axis of rotation. What is the resulting angular speed of the student and the stool?
A current of 2.5 a runs through 20 circular wire loops of diameter 10 cm. What is the magnetic field magnitude and direction at the center of the loops? (Show the derivation of any formula that you use.)
An athlete performs a Romanian deadlift with 197 kg bar from floor to hips (0.75 m) in 2.1 seconds. How much mechanical power is generated from the athlete
Water flowing through a garden hose of diameter2.70cm fills a20.0-L bucket in1.30min. What is the speed of the water leaving the end of the hose
A boy pushes a box that has a mass of 355 N up an incline. Ifthe boy exerts a force of 67 N along the incline, what is the mechanical advantage of the incline
Transverse waves with a speed of 42.5 m/s are to be produced on a stretched string. Calculate the wave speed in the string if the tension is 8.00 N
a long narrow steel rod of length 2.5000 m at 25 c is oscillating as a pendulum about a horizontal axis through one
Suppose the ring rotates once every 4.40s . If a rider's mass is 56.0kg , with how much force does the ring push on her at the top of the ride
A 500? resistor and a 240mH inductor are connected in series with an ac generator with an rms voltage of 17.0V, compute the rms current in this circuit
two players hit an air hockey puck simultaneously. one player hits the puck with a force 4.75 at an angle 23.9. the
A 2.3 kg pendulum bob is pulled out such that its center of mass is 0.26 m above its lowest point and released. What is the gravitational potential energy of the pendulum
A soccer ball lying on the ground is kicked with an initial velocity of 10.0 m/s at an angle of 37 degrees above the horizontal. How far over does it land on the ground?
A cylinder is filled with 0.10 mol of an ideal gas at standard temperature and pressure, and a 1.4-kg piston seals the gas in the cylinder with a frictionless seal. find the frequency of vibration of the piston
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