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A 4.0-kg ball with a velocity of 4.0m/s in the +x-direction collides head on elastically with a stationary 2.0-kg ball. What are the velocities of the balls after the collision?
Three equal point charges, each with charge 1.50 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.6m. What is the electric potential energy U of the system.
A 160 g trick baseball is thrown at 63 km/h . It explodes in flight into two pieces, How much energy, in joules, do the pieces gain in the explosion
A 110kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350N. For the first 15.00 m the floor is frictionless and for next 15 m the coefficient of friction is 0.30. What is the final speed of the crate.
water flows at 0.20ls through a 8.0-m-long garden hose 2.5cm in diameter that is lying flat on the ground. the
A Carnot engine has a power output of 240 kW. The engine operates between two reservoirs at 9 C and 661 C. How much thermal energy is absorbed each hour
An electron moves in a circular path perpendicular to the constant magnetic field with a magnitude of 2.00 mT. The angular momentum of the electron about the center of the circle is 5.50 multiplied by 10-25 J•s.
Two blocks are connected by an ideal string that passes over a massless, frictionless pulley. determine the magnitude of the blocks acceleration
A merry-go-round starts from rest and reaches the angular speed of 4 rpm in the first two minutes. What would be the angular acceleration of the merry-go-round
question calculate the change in the amount of bremsstrahlung that would be produced if an aluminum target were
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find out the minimum angle at which the box starts to sl..
a battery with an internal resistance rint can be modeled as an ideal battery in series with a resistor rint suppose a
A ship is lost in a dense fog in a Norwegian fjord that is 2.56 km wide. The air temperature is 5.00°C. How far from one side of the fjord is the ship
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