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a 25kg mass hangs by a rope. If the tension in the rope is a constant 200N and the initial velocity of the mass is 3m/s upwards, what is the velocity of the mass after 2 seconds.
A piston with a volume of 24 liters contains 3.0 moles of argon. It is heated from 20 degrees Celsius to 178 degrees Celsius, and the piston is allowed to expand during the heating process so that the pressure on the gas remains constant. How much he..
A 30-g bullet initially traveling 500 m/s penetrates 12 cm into a wooden block. What average force does it exert on the block
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. How much work is done by the rope on the sledge
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 60.0m/s, Find the horizontal component of the average force on the ball. Take the x-direction to be positive to the right
The resistivity of gold is 2.44 x 10-8 ohms.m at room temperature. A gold wire that is 0.9 mm in diameter, What is the electric field in the wire
An oversized yo-yo is made from two identical solid disks each of mass M = 2.00 kg and radius R = 10.0 cm. what torque does gravity exert on the system with respect to the given axis
The average density of the planet Venus is 5219 kg/m3. The acceleration of gravity on its surface is 8.84 m/s2. Calculate the average radius of Venus
Two large identical flat metal plates are placed parallel to one another, seperated by a small distance compared to their linear size. One plate is given a charge per unit area 2.50E-5 C/m2 and the other a charge per unit area -2.50E-5 C/m2. Using..
Calculate the linear and rotational speed of a solid sphere of radius 20.0 cm and mass 1.20 kg that is released from rest and rolls down a 30.0 degree incline that is 10.0 m long, when it reaches the bottom.
A pressure wave in air is described by the following equation: P(x,t) = A sin(2(pi)t/T - 2(pi)x/lambda), Determine the speed of the pressure wave
An electron moving to the right at 0.900c collides with a positron moving to the left at 0.900c. What is the wavelength of the protons
Two ice skaters, Daniel (mass 70.0 ) and Rebecca (mass 45.0 ), are practicing. Daniel stops to tie his shoelace and, while at rest, is struck by Rebecca, What is the magnitude of Daniel's velocity after the collision
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