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A horizontal force of 280 Nis exerted on a 2.0 kg discus as it is rotated uniformly in ahorizontal circle (at arm's length) of radius 1.00 m. Calculate the speed of the discus.
The system shown to the right is in equilibrium. The steel block has a mass m1 and the uniform rigid aluminum strut has a mass The strut is hinged so that it can pivot freely about it's bottom end. The angle between the left wire and the ground is an..
In the solar system frame, two events are measured to occur 3.0 hours apart in time and 1.5 hours apart in space. What is the time seperation between the events in the alien's frame
A projectile with mass .065 kg is fired at and embeds itself in a pendulum with mass .19 kg. What is the percent kinetic energy loss during the perfectly inelastic collision
A man of mass 45 kg. is standing on a uniform rolling board of length 10 m. and mass (mb = 30 kg). how far does the board retreat
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. Which rate of rotation gives the greater speed for the ball
Let's build a helium atom. Start with a nucleus with 2 protons and 2 neutrons, Calculate the energy gained by the system constructing this atom
The magnitude of each force is 204 N, the force on the right is applied at the angle 29 and the mass of the block is 12kg. The coefficient of friction is 0.138. The acceleration of gravity is 9.8 m/s2. What is the magnitude of the resulting accelerat..
Two bicycle tires are set rolling with the equivalent initial speed of 5.0 m/s along a long, straight road, and distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 {rm psi} and goes the dist..
A gas expands from I to F. The energy added to the gas by heat is 442 J when the gas goes from I to F along the diagonal path. What is the change in internal energy of the gas.
when a 50 mf capacitor is attached to an ac source its capacitive reactance is 40 ohms. if instead a 100 mf capacitor
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant? -140 N/C 140 N/C -35 N/C 35 N/C 75 N/C.
A force of magnitude 610.0 N stretches a certain spring by 0.230 N from its equilibrium position. How much elastic potential energy is stored in the spring when it is stretched 0.300 m from its equilibrium position
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