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In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Assume the yo-yo was 155 kilogram, and it consisted of two uniform disks of radius 48.2 centimeter connected by an axle of radius 2.68 centimeter. Obtain the magnitude of the acceleration of the yo-yo during
(a) its fall and
(b) its rise?
(c) Find the tension in the cord on which it rolled?
If an isolated conducting sphere 10 cm in radius has a net charge of +7.9 µC, what is the potential on the surface of the sphere
A 140kg- tackler moving at 2.3 m/s meets head-on (and tackles) an 99 kg- halfback moving at 7.0 m/s. What will be their mutual speed immediately after the collision
Two charges of equal magnitude exert an attractive force of 2.5×10-4 N on each other. If the magnitude of each charge is +3.0? C, how far apart are the charges
A 11 kg block is at rest on a level floor. A 380 g glob of putty is thrown at the block such that it travels horizontally, what is the initial speed of the putty
A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.734 diopters. How far is her near point from her eyes
A projectile is launched straight up at 59 m/s from a height of 73 m, at the edge of a sheer cliff. The projectile falls, just missing the cliff and hitting the ground below.
A cyclist approaches the bottom of a gradual hill at a speedof 11 m/s. find the speed at which the cyclist crests the hill
Two identical pucks are on an air table. Puck A has an initialvelocity of 2.3 m/s in the positivex-direction. Puck B is at rest. Puck A collides elastically with puck B and A moves off at 1.0 m/s at an angle of +60° above thex-axis.
A girl delivering newspapers travels 2 blocks west, 2 blocks north, and then 5 blocks east. What is her resultant displacement
The luxury linerQueen Elizabeth 2 has a diesel-electric powerplant with amaximum power of 87 MW at a cruisingspeed of 33.5 knots. What forward force is exerted on the ship at this speed
Calculate how much work is done when 5 moles of an ideal gas at27ºC expand is othermally from an initial volume of 1 liter toa final volume of 2 liters.
two equally charged particles held 4.0 x 10-3 m apart are released from rest. the initial acceleration of the first
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