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A 0.060 kilogram tennis ball, initially moving at a speed of 12 m/s, is struck by a racket causing it to rebound in the opposite direction at a speed of 18 m/s. Define the change in momentum of the ball?
The current in an electro magnet connected to a 240 V line is 14.5A.At what rate must cooling water pass over the coils if the water temperature is to raise by no more than 7.50C ?
The magnetic field inside a 5cm diameter solenoid is 2.0T and decreasing at 4.0 T/s. What is the electric field strength inside the solenoid
An electron and a proton are accelerated starting from rest through a potential difference of 10 million volts. Find the momentum (in MeV/c) and the kinetic energy (in MeV) of each
A uniform steel plate has an area of 0.905 m2. When subjected to a temperature difference between its sides, a heat current* of 22.5 kW is found to flow through it. What is the temperature gradient? What is the temperature difference when the plat..
A sledge loaded with bricks has a total mass of 17.4 kilogram and is pulled at fix speed by a rope inclined at 20.2 degree above the horizontal. Calculate what is the tension in the rope
water flows steadily through a horizontal pipe at the nozzle inlet the diameter is 6 in. at the nozzle outlet where the
A major-league catcher gloves a 93 mi/h pitch and brings it to rest in 0.14m. If the force exerted by catcher is 803 N, what is the mass of the ball.
Using the electric field described in the alpha-cannon simulation, suppose that an alpha particle is fired upward and forward from a height y = 0 m at a speed v = 28.0 m/s.
The rms speed of the molecules in 1.1 of hydrogen gas is 1700 .500J of work are done to compress the gas while, in the same process, 1800 of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecule..
consider a rocket launched from vandenberg afb ca longitude34.6 degrees having an initial velocity of 3 kms in the
A man strikes a nail with a 1kg hammer. The speed of the hammer just before it strikes the nail is 5m/s, What is the force exerted on the nail by the hammer
An object fired at an angle of 19.1° above the horizontal takes 2.61 s to travel the last 15.3 m of its vertical distance and the last 10.3 m of its horizontal distance. With what speed was the object launched
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