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A centrifuge in a medical laboratory rotates at an angularspeed of 3450 rev/min. When switchedoff, it rotates through 54.0revolutions before coming to rest. Find the constant angularacceleration of the centrifuge.
Object 1 has a mass m1 and a velocity 1 = (2.87 m/s). Object 2 has a mass m2 and a velocity 2 = (3.01 m/s). The total momentum of these two objects has a magnitude of 18.0 kg • m/s and points in a direction 66.5° above the positive x-axis. Find out m..
The magnetic field in a solenoid is B = (µ0NI) / d. A circular wire of radius 10 cm is concentric with a solenoid of radius 7 cm, What is the non-Coulomb electric field in the wire
It takes a force of 80.0 N to compress the spring of a toy popgun 0.200 m to "load" a 0.180-kg ball. With what speed will the ball leave the gun
A car is safely negotiating an unbaked circular turn at aspeed of 19.1 m/s. The maximum static friction force acts on thetires. determine to what speed must the driver slow the car
One runner covered the 100-m dash in 10.9 s. Another runner came in second at a time of 11.4 s, determine the separation between the two runners when the winner crossed the finish line
The Hale Telescope The 200-inch-diameter concave mirror of the Hale telescope on Mount Palomar has a focal length of 16.9, What is the magnification of her image
suppose that each vehicle is initially moving at 8.60 m/s and that they undergo a perfectly inelastic head-on collision. what force does the seat belt exert on each driver
How many moles of gas are in a balloon with a volume of 5.07 liters at a temperature of 298 K and a pressure of 1.11 atm
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. how fast is the student going at the bottom of the slide
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. How far is each spectator from the player
An airplane takes off at sea level and climbs to a height of 480 m. Estimate the net outward force on a passenger's eardrum assuming the density of air is approximately constant
A man clearly see an object that is 2m away(or more) without glasses. if the glasses have a refractive power of +1.50D, how close can an object be to the eyeglasses
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