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When a 9.86 kilogram mass is located on top of a vertical spring, the spring compresses 4.31 centimeter. Determine the force constant of the spring?
A beam of light is incident on a glass plate ( = 1.62) in air and the reflected ray is completely polarized. What is the angle of refraction for the beam
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
a concave mirror used by a person who is shaving or applying makeup creates a virtual image of the face that is 1.50
A disk, initially rotating at 149 rad/s, is slowed down with a constant angular acceleration of magnitude 4.23 rad/s2. (a) Explain by how much time does the disk take to stop? (b) Through what angle (rad) does the disk rotate during that time?
A skier of mass 112 kg travels down a frictionless ski trail. If the top of the trail is a height 220 m above the bottom, what is the work done by gravity on the skier
A 0.160-kg baseball is pitched with a speed of 34.5 m/s (77.2 mph). When the ball hits the catcher's glove, the glove moves back by 5.03 cm (1.98 in.) as it stops the ball. What impulse was applied to the baseball
The owner of a van installs a rear-window lens that has a focal length of -0.295 m. When the owner looks out during the lens at a person standing directly behind the van, the person appears to be now 0.242 m from the back of the van, and appears to b..
An airplane with a mass of 2.2 x106 kg. has the air flow past the lowersurface of the wings at 80 m/s. how fast must theair flow over the upper surface of the wing
A loudspeaker of mass 23-{rm kg} is suspended a distance of h = 1.80- {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.10- {rm m}. What is the tension T in each of cables.
A cord is wrapped around the rim of a wheel r in radius, and a steady pull of F is exerted on the cord. The wheel is mounted on frictionless bearings on a horizontal shaft during its center. The moment of inertia of the wheel regarding this shaft is ..
question1a soccer player kicks a rock horizontally off of a 40.0m high cliff into a pool of water. if he hears sound of
A pendulum bob of mass m is attached to a massless string of length L. If the bob is released from rest at a horizontal position, What is the tangential acceleration of the bob
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