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A centrifuge in a medical laboratory rotates at an angularspeed of 3600 rev/min. When switched off, it rotates 50 timesbefore coming to rest. What is the constant angular acceleration of the centrifuge?
a metallic sphere has a charge of 3.8 nc. a negatively charged rod has a charge of -6.0 nc. when the rod touches the
A generator has a square coil consisting of 188 turns. The coil rotates at 118 rad/s in a 0.222-T magnetic field. What is the length of one side of the coil
An object starts from rest at time t = 0.00 s and moves in the +x direction with constant acceleration. compute the acceleration of the object
Calculate the force on the baby due to Jupiter if it is at its closest to the Earth, some 6.29x1011 m away, showing it to be comparable to that of the father
A 0.030 kg lead bullet hits a steel plate, both initially at 20?C. The bullet melts and splatters on impact. What is the minimum speed the lead bullet must have in order to melt on impact
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
A "swing" ride at a carnival consists of chairs that are swung in a circle by 14.3 m cables attached to a vertical rotating pole, Determine the tension in the cable attached to the chair
A bullet of mass 0.002 kg moving at 421 m/s impacts a large fixed block of wood and travels 6.1 cm before coming to rest. find the force exerted by the wood on the bullet
How much power does an automotive battery contain that can furnish 750 Amperes at 12.7 volts for a short period of time
A 605 N woman climbs a staircase that rises at 47 degrees above the horizontal and is 4.70 m long. Her speed is a constant 40.0 cm/s. How much work has gravity done on her as she climbed the stairs
A cylinderical wooden log rolls (without slipping) down a small ramp. The log has a radius of 15 cm, a length of 2.0 m, and a mass of 78 kg. What is the log's total kinetic energy at the bottom of the ramp
A clean and dry core sample weighing 425 g was 100% saturated with a 1.07 specific gravity brine, Calculate the porosity of the rock sample
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