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A fortune teller's glass ball is 10 cm in diameter. Her secreting is placed 6 m from the edge of the ball.
1. The crystal ball is removed and a thin lens is placed where the center of the ball had been. If the image is still in the same position, what is the focal length of the lens?
A vertical spring stretches 4.2 cm when a 14-g object is hung from it. The object is replaced with a block of mass 22 g that oscillates up and down in simple harmonic motion. Calculate the period of motion. ____s . Use the given information to find t..
To determine the radius of gyration of a tire, an engineer lets the tire roll down an inclined surface. what is the radius of gyration of the tire
A block of mass M = 1.00 kg contains a coiled spring and a ball of mass m = .250 kg. The spring is released when the ball block system is at rest on the edge of a frictionless plane inclined 20 degrees from the horizontal. The ball, initially 2.00..
On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.565 m from the axis of rotation of the stool. What is the initial angular momentum of the system
A baseball is hit with a speed of 30ms-1 at an angle of 40degrees. It land`s on the flat roof of a nearby building with a height of 14 m. If the ball was hit when it was 1.40 m above the ground, what horizontal distance does it travel before it la..
In a rectangular corrdinate system, a postitve point charge q = 6.00nC is placed at the point x = +.150 m, y = 0, and an identical point charge is placed at x = -.150 m, y = 0.
A closed system is observed to have 68objects in it. Initially, the total energy of the system is7944 J. After 1.1h have passed, how much total energy will the system contain?
Light inside an optical fiber tube hits the wall between the tube and air. What is the index of refraction of the tube
An electron moving to the right at 1.0% the speed of lightenters a uniform electric field parallel to its direction ofmotion. what direction is required for the electric field
A ladybug is sitting at the center of a turntable. The turntable is rotating on a frictionless bearings and it rotates without assistance from a motor. As the ladybug walks to the edge of the turntable, what happens to combined angular momentum of..
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 52° C. What is the temperature coefficient of resistivity
One of the wavelengths of light emitted by hydrogen atoms under normal laboratory conditions is at ?0 = 656.3nm in the red portion of the electromagnetic spectrum, How fast are the emitting atoms moving relative to the earth
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