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A uniform meter stick of mass M is pivoted on a hinge at one end and held horizontal with a spring with spring constant k attached at the other end. If the stick oscillates up and down slightly, what is its frequency? [Hint: Write a torque equation about the hinge.]
A thin gold ring of radius 1.02 cm carries a uniform charge per unit length of 1.02e-14 C/m. Find the electric field on the axis of the ring 1.09 cm from the center magnitude.
A horse canters away from its trainer in a straight line,moving 150 m away in 11.0 s. It then turns abruptly and gallops halfwayback in 4.5 s. Calculate its average speed.
a spherical drop of water carrying a charge of 20 pc has a potential of 530 v at its surface with v 0 at infinity.a
A sledge loaded with bricks has a total mass of 18.6 kg and is pulled at constant speed by a rope inclined at 19.6° above the horizontal. How much work is done by the rope on the sledge
A 8cm radius disk with a rotational inertia of .12kgm^2 is free to rotate on a horizontal axis. A string is fastened to the surface of the disk and a 10kg mass hangs from the other end. The
The amount of heat that an engine discards to the cold reservoir is 2 times the amount of work that it does. Evaluate what is the efficiency of the engine
An astronaut on a space walk discovers that his jet pack no longer works, leaving him stranded 40 meter from the spaceship. describe how the astronaut can still use it to return to the ship
A stone with a mass of 0.900 kg is attached to one end of a string 0.900 m long. The string would break if its tension exceeds 60-N. The stone is whirled in a horizontal circle on a frictionless tabletop.
A coin rests 14.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.440. what is the angular velocity of the turntable
consider an electron with an initial speed v0 29 mms 1 mm 1 megameter 1000 km 1e6 m that is traveling parallel to
The power required by an ice maker is 225 W and is the rate at which it does work. The ice maker operates like a refrigerator or an air conditioner and has a coefficient of performance of 3.60.
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes in 69.0 degrees, Find the angle the resultant force makes with the rope of dog A
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