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(a) Find the kinetic energy of a 81.0-kg spacecraft launched out of the solar system with speed 146 km/s by using the classical equation K =(1/2)mu^2.
(b) Calculate its kinetic energy using the relativistic equation.
Two small metallic spheres, each of mass 0.20g, are suspended as pendulums by light strings from a common point.
A bungee cord is stretched between two poles with a force of 443 N. What is the velocity of a wave on this bungee cord
A constant torque of 260 N-m acts on a flywheel. If the flywheel makes 25 complete revolutions, how much work has been done by the torque on the flywheel
A thin spherical shell of mass 0.25 kg and radius 0.15 m is released from rest from the top of a 3.0-m high ramp. What would the linear speed be at the bottom
A 47 kg person, standing 0.980 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 3.10 m/s relative to the ground. Find resulting angular speed (in rad/s) of the disk.
When people exercise they shed heat to the environment by sweating and radiating, calculate the rise in body temperature after one hour
A proton moves in a circular path perpendicular to a 1.19 T magnetic field. Calculate the energy of the proton in eV
A 100kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30 below the horizontal. The coefficient of kinetic friction is 0.20. What must be the magnitude of P, so that the net work completed by it and the kinetic..
A very tall flagpole, temporarily charged uniformly by lightning, What is the linear density of the charge on the flagpole
A soccer ball is kicked with an initial horizontal velocity of 18.0 m/s, find How far from where it was kicked will the ball land
A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube.
An alpha particle has twice the charge of a beta particle. Why does the former deflect less than the later when passing between electrically charged plates, What particles make up the nucleus of an atom
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