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The position of an object is r= ( 3.2t +1.2t^(2)) ihat + (1.7t -1.6t^(2)) jhat m, where t is time in seconds. What is the magnitude of the acceleration and the direction of the acceleration?
question1a frictionless pulley has the form of a uniform solid disk of mass 4.00 and radius 23.0. a 1.80 stone is
the electrons that produce the picture in a tv set are accelerated by a very large electric force as they pass through
A 250 g, 24-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply to take the disk from 0 to 1600 rpm in 4.1 s
Using a map of the United States we find that Atlanta, GA is in a direction north of east from Dallas, TX. What is the displacement from Dallas to Chicago
A car of mass 1540 kg rests on a hydraulic lift with a piston of radius 0.27 m that is connected to a second piston of radius 0.031 m. what is the force at the second piston
During the launch from a board, a diver's angular speed about her center of mass changes from zero to 4.50 rad/s in 220 ms. FIND the magnitudes of her average angular acceleration
Identical point charges are fixed to opposite corners of a square. Where doesa third point charge experience the greater force, at one of the empty corners or at the center of the square?
A patient is undergoing open-heart surgery. A sustained current as small as 25μA can be fatal. find the minimum voltage that poses a danger to the patient
q1. a fan at a rock concert is 30 m from the stage where sound intensity level is 110 db. her eardrums have the
A crate of mass 12.5 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline, How much mechanical energy is lost due to friction
Joey, whose mass is 39kg, stands at rest at the outer edge of the frictionless 230kg merry-go-round, 2.2m from its center. What is the final angular speed of the merry-go-round
What is the probability that a diatomic molecule, modeled as a harmonic oscillator will be observed outside the classical limit of motion?
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