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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?
an infinite line charge of uniform linear charge density -1.1 cm lies parallel to the y axis at x -1 m. a point
an atom is ionized so that it has only one electron. when the electron drops from the n 4 shell to the n 1 shell an
a uniform magnetic field of 0.15 t is directed along the positive x-axis. a positron moving at 5.0 x 106 ms enters the
Calculate the the electrical repulsion that each bag exerts on the other. Imagine two 2.0{\rm g} bags of protons, one at the earth's north pole and the other at the south pole.
An explosion occurs at the end of a pier. The sound reaches the other end of the pier by traveling through three media: air, fresh water, how much later do the second and third sounds arrive
A person pulls a 5.0 kg sled by a rope across a floor. The coeffecient of kinetic friction between the floor and the sled is 0.15. What is the horizontal acceleration of the sled
A glass plate having parallel faces and a refractive index of 1.55 lies at the bottom of a liquid of refractive index 1.62. Compute the angle of refraction of this light in the glass
a circular loop of wire of radius 6.0 cm has 10 turns and lies in the yz plane. it carries a current of 5 a in such a
The mass of the blue puck shown below is 25.0% greater than the mass of the green puck. Before colliding, the pucks approach each other with momenta of equal magnitudes and opposite directions, and the green puck has an initial speed of 7.0 m/s. Find..
A skater has rotational inertia 4.2 kg?m2 with his fists held to his chest and 5.7 kg?m2 with his arms outstretched. how fast will he be spinning
A car is traveling north at 17.7m/s. After 12s its velocity is 14.10m/s in the same direction. Find the magnitude and direction of the car's average acceleration.
rotating fan a rotating fan completes 1200 revolutions every minute. consider a point on the tip of a blade at a radius
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