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A balls rolls off a shelf with the initial velocity v and lands at the horizontal distance d from the shelf. What is the height of the shelf h above the floor?
A man of mass 95kg is dancing with his wife, who has a mass of 68kg. Assume that each person's mass is concentrated at their respective centers of mass, which are separated by 48cm. What is the gravitational attraction between them?
A basketball player shoots a 0.75-kg ball into a basket by shooting the ball with an initial speed of 12 m/s at an angle of 60 above the horizontal. The basket is three meters o the ground and the ball leaves her hand at a height of 1.4 meters above ..
the flash unit in a camera uses a 2 battery to charge a capacitor. the capacitor is then discharged through a
Ball A, with a mass of 0.11 kilogram and traveling at 12m/s, collides head on with ball B which has a mass of .32 kilogram and is initially at rest. Compute the final velocities of each ball if the collision is perfectly elastic
starting from its nest, an eagle flies at constant speed for 3.0 min due east, then 4.0 min due north. how long is the eagle in the air
A weight lifter raises a 1109 N weight a vertical distance of 1.60 m in a time interval of 1.75 s. Compute the power provided by the weight lifter's force
A bicycle wheel of radius 0.4 m is spinning at a rate of 45 revolutions per minute. What is the period of the wheel's motion? What is the centripetal acceleration of a point on the edge of the wheel?
A boat has a mass of 7690 kg. Its engines generate a drive force of 3680 N due west, while the wind exerts a force of 670 N due east and the water exerts a resistive force of 1680 N due east. Take west to be the positive direction. What is the boa..
These two waves travel along the same string: y1 = (4.17 mm) sin (2.24?x - 300?t), y2 = (5.96 mm) sin(2.24?x - 300?t + 0.727?rad). What are (a) the amplitude and (b) the phase angle (relative to wave 1) of the resultant wave?
In the old west, a marshal riding on a train traveling 35.0 m//s observes a duel between two men standing on the Earth 55.0 m apart parallel to the train. The marshal’s instruments indicate that in his reference frame the two men fired concurrently. ..
Assume that a bowling ball, initially traviling at 12.0m/s,has 5 times the mass of a pin and that the pin goes off at 80* fromthe original direction of the ball. Calculate the final speed of the pin
White light, with frequencies ranging from 4.20×1014 Hz to 7.74×1014 Hz, is incident on a calcium surface. Calculate the lowest frequency for which no electrons are ejected
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