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A ladder 2.85 m long, weighing 228 N, initially lies flat on the ground. The ladder is raised to a vertical position. Compute the work done by the force lifting the ladder. The ladder's center of gravity is at its geometric center.
A proton moving at 5 x 10^4 m/s horizontally ( + x direction) enters a region where a magnetic field of .12 T is present directed in -y direction
assuming the average person has a mass of 68kg? Do not avoid the weight of the logs. Assume the specific gravity of wood is 0.6.
A solid spherical ball of mass 2.74 kg and radius 0.15 m rolls along a smooth, level surface with a speed of 2 m/s. How far up the plane does the ball go
Two point charges, Q_1 = -6.1 mu C and Q_2 = 2.0 mu C, are situated between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.30 m. suppose that the electric field produced by the charged plates is unifor..
A single loop of wire is lying in the plane of a paper, What will be the direction of the induced current flowing in the loop
A nuclear power plant generates(output) 500 MW. it is 34% efficient, How much does the water temperature rise
Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 108 m. Find the time it took for his voice to reach earth via radio waves.
What is the resistance of a lightbulb that uses an average power of 40.0 W when connected to a 60.0-Hz power source having a maximum voltage of 132 V
A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of 12.0 m/s in a time of 25.0 s. What is the acceleration of the car and trailer
a 5600 kg mass car is taking a turn at 72 ms. if the frictional force here is 44000n what is the radius of curvature
The flywheel of an engine has a moment of inertia 2.2 {rm kg} cdot {rm m} ^{2} about its rotation axis. What is its final kinetic energy.
A 5-kg rock is dropped off a 30-m high building. If the rock is dropped from rest, what is the average power supplied by gravity
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