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A cable passes over a pulley. The cable does not slip on the pulley, and the tension in the cable is not the same on opposite sides of the pulley. The force on one side is 137N, and the force on the other side is 109N. Assuming that the pulley is a uniform disk of mass 2.27kg and radius 0.840m, determine its angular acceleration.
During 5 successive 0.93 min intervals, a runner moves at the following constant speeds: 0.440 km/min, Compute the total distance traveled and the average speed
A 9800 kg boxcar traveling at 19 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 13 m/s
A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 1.3e14 kg · m/s. Find the relativistic momentum of the spacecraft
A charged particle with a charge-to-mass ratio of |q|/m = 5.7 108 C/kg travels on a circular path that is perpendicular to a magnetic field whose magnitude is 0.75 T
Hot water at 90 degrees C is poured into a large Styrofoam cup that contains water at 20 degrees C. calculate the ratio of cold water to hot that would give this result. Start with energy conservation: Q(H) + Q(C) = 0
A small block with a mass of 0.117 kg is attached to a cord passing through a hole in a horizontal frictionless surface, How much work was done by the person who pulled on the cord
During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms.
q1. assume you are 75 cm from a plane mirror. what area of the mirror is used to reflect the rays entering one eye from
Old naval ships fired 14 cannon balls from a 240 cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship.
A 1.9 kg object that stretches a spring 8.8 cm from its natural length when hanging at rest oscillates with an amplitude of 6.5 cm, Find the total energy of the system
A cart is propelled over an xy plane with acceleration components ax = 6.1 m/s2 and ay = -1.7 m/s2. what is the velocity of the cart when it reaches its greatest y coordinate
A certain atom has atomic number Z = 20 and atomic mass number A = 42. What is the approximate radius of the nucleus of this atom
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