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A ball of mass 0.40 kg is fired with velocity 180 m/s into the barrel of a spring gun of mass 1.5 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to friction. What fraction of the ball's initial kinetic energy is stored in the spring?
Two weights are connected by a very light flexible cord that passes over a 30 frictionless pulley of radius 0.100. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling. One weight is 75N and the other is 125 N.
A singly charged ion of unknown mass moves in a circle of radius 14cm in a magnetic field of 8.2 T. The ion was accelerated through a potential difference of 9kV before it entered the magnetic field.What is the mass of the ion.
A 1.65 kg bowling trophy is held at arm's length, a distance of 0.68 m from the shoulder joint. What is the magnitude of the torque applied by the trophy
questionwater molecules around a hydrophobic molecule are more structured in a sense that their multiplicity w reduces
a pelican flying along a horizontal path drops a fish from a height of 4.7 m. the fish travels 7.7 m horizontally
A cubic meter of some material has a mass of 8000 kg. Find the buoyant force on the block and the tension in the cable
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). determine the power delivered to the primary
A roughly spherical astroid whose radius is 40 km rotates once every 2.4 hours. What is it's angular speed in milliradians/sec
A 5-turn coil has square loops measuring 0.200 m along a side and a resistance of 3.00 ohms. It is placed in a magnetic field that makes an angle of 40.0° with the plane of each loop. The magnitude of this field varies with time according to B= 2.00t..
In a circuit of two lamps in series, if the current through one lamp is 2 A, what is the current through the other lamp
A circular wire loop of radius 11.3 cm carries a current of 3.48 A. What is the magnitude of the torque acting on the loop
A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find out the mass of the worker.
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