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A small grinding wheel has a moment of inertia of 4.0×10?5. What net torque must be applied to the wheel for its angular acceleration to be 150 ?
At time t1 = 2.00 s, the acceleration of a particle in counterclockwise circular motion is (1.00 m/s2) i + (6.00 m/s2) j. What is the radius of the path taken by the particle
A 85 kg window cleaner uses a 14 kg ladder that is 5.9 m long. He places one end on the ground 3.4 m from a wall, find the angle (relative to the horizontal) of that force on the ladder
A boy shoots a BB gun horizontally at a target 15 m away. The gun is aimed directly at the center of the target, but the small metal BB hits 56 cm lower. avoid any air resistance, what was the initial speed of the BB.
One end of a cord is fixed and a small 0.460 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m, find the tangential and radial components of acceleration
Four identical charges (+2.0 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
A disk spinning with angular velocity , w=12 rad/s slows down to a stop in 4 seconds. What is the angular displacement delta theta
Calculate the fast neutron flux needed to produce the same injury as 0.50 mSv/hr of thermal neutrons, and then, as 6,000 thermal neutrons per sq. cm per sec.
A wheel is spinning clockwise at a 10 revolutions per second at t = 0. Due to friction in the bearings supporting the axle, the wheel slows down, losing 0.500 revolutions per second in angular velocity each second, until it comes to rest.
q1. a 23 g ball is fired horizontally with initial speed toward a 110 g ball that is hanging motionless from a 1.1m
An iron wire has a cross-sectional area equal to 9.50 10-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 8.0 A. Calculate the drift speed of conduction electrons in..
How much force is needed to hold a 7.0 cm diameter hose delivering 440 L/min through a 0.73cm diameter nozzle.
A mass of 1.60 kg stretches a vertical spring 0.335 m. If the spring is stretched an additional 0.164 m and released, how long does it take to reach the (new) equilibrium position again.
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