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Q. A m1 = 16g object and an m2 = 11.5 kg object are suspended, joined by a cord that passes over a pulley with a radius of 10.0 cm and a mass of 3.00 kg. The cord has a negligible mass and does not slip on the pulley. The pulley rotates on its axis without friction. The objects start from rest 3 m apart. Treating the pulley as a uniform disk, determine the speeds of the two objects as they pass each other.
Suppose an initial speed of 21.4 m/s, at an angle of 61.10° with respect to the positive x axis. Find the velocity at time t0; enter x component, after that the y component.
A proton is initially at rest at a point where the potential is 459 V. Sometime later the proton is at a point where the potential is 218 V. If no force other than an electrostatic force acts on the proton, what is its final kinetic energy.
Two charged dust particles exert a force of 4.20 x 10^-2 N on each other. What would be the force if they are moved so they are only one-eight as far apart.
A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.
If a person were to push hardly on a solid wall will the work be done? Also, why would it be exhausting to push hardly against this solid wall?
What is the potential difference across capacitor. How much charge is on each place.
Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wavefronts in front of the source compare to those behind it?
An ocean liner leaves New York City and travels 43° north of east for 189 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom.
A krypton laser produces a cylindrical red laser beam 3mm in diameter with 4W of power. What is the light intensity on a wall 5.0 m away from the laser.
A meter stick with a mass of 89.5 g is being supported at the 50 cm mark with a pivot that is 1.00 cm above the center of mass of the meter stick. The moment of inertia of stick about that point is 0.00746 kgm^2. What is the period of oscillation ..
A 170, 35.0 cm-diameter turntables rotate on frictionless bearings at 53.0. A 20.0 block sits at the center of turntable. A compressed spring shoots the block completely outward along a frictionless groove in the surface of the turntable.
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