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A crate is pulled by a hoist a distance of 3.4m across the flat truck bed in 8 seconds. Determine the work done in moving the crate and the power of the hoist when the coefficient of friction is 0.6?
A rotating wheel requires 5.00 s to rotate 26.0 revolutions. Its angular velocity at the end of the 5.00-s interval is 99.0 rad/s. What is the constant angular acceleration (in rad/s) of the wheel
A block with mass m = 2.00 kg is placed against a spring on a frictionless incline with angle ? = 34°. (The block is not attached to the spring). What is the change in the gravitational potential energy of the block-Earth system
A transformer has 3,840 turns in the secondary. The inputvoltage is 110V, the output current is 6.5A. the input current is0.5A. Calculate the output voltage
As an example, consider a coil of diameter 2.00 cm with 72.0 turns that is rotated about an axis perpendicular to the field at a rate of 20.0 Hz. If the maximum induced emf in the coil is 6.00 V, find out the strength of the magnetic field.
You look through a Polaroid sheet at a 60 W light bulb 3.00 m away. Find the intensity of the light you see
A disk of mass M and radius R rotates around the z axis with angular velocity wI. What is the ratio of the initial to the final kinetic energies of the two-disk system
A 3.60 {rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66 {rm kg} construction worker stands at the far end of the beam.
A system consisting of two positive particles is altered by an outside force so that its potential energy increases by 5.4 ?J. What is the work done by the outside force
A 0.80 kg ball and a 4.20 kg ball are connected by a 78.0 cm long massless, rigid rod. The structure rotates about its center of mass at 250 rpm. What is the rotational kinetic energy of the structure?
The magnetic field in an electromagnetic wave has a peak value given by B = 5.0?T. For this wave, find the peak electric field strength
q1. tony of mass 55 kg coasts on his bicycle of mass 20 kg at a constant speed of 4 ms carrying a 12 kg pack. tony
A uniform rod rotates in a horizontal plane about a vertical axis through one end. The rod is 7.63 m long, weighs 11.1 N, and rotates at 275 rev/min.find its rotational inertia about the axis of rotation
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