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A ?ywheel in the form of a heavy circular disk of diame- ter 0.600 m and mass 200 kg is mounted on a friction-less bearing. A motor connected to the ?ywheel acceler- ates it from rest to 1 000 rev/min. How much work is done on it during this acceleration?
Block A has mass 1.20 kg and Block B has mass 2.9 kg. They are forced together, compressing spring S between them how much potential energy was stored in the compressed spring
A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 7.00 km from the source, What is the average power radiated by the source
An electric motor has a 840-turn coil on its armature. The coil is circular with diameter 17cmand carries 10.0A, ind the maximum torque on the coil when it rotates in a 1.20T magnetic fiel
A 78 kg circus performer jumps from a 4.20 m height onto a trampoline and stretches it downward 0.3m. suppose that the trampoline obeys Hooke's law.
A conducting sphere of radius r1 = 0.29 m has a total charge of Q = 2.2 uC, What is the total charge on sphere two, Q2 in C
A small plane tows a glider at constant speed and altitude. If the plane does 2.09 105 J of work to tow the glider 130m, what is the angle between the tow rope and the horizontal
A high-speed lifting mechanism supports a 875-kg object with a steel cable that is 33.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
An inventor designs an ice boat that is propelled by pumping a jet of water directly out the rear in a direction parallel to the ice. What is the velocity of the ice boat when the water is gone
A heavy rope used for as a mooring line for a cruise ship sags a shown. If the mass of the rope is 96 kg, what are the tensions in rope at A and B.
Picture yourself in the castle of Helm's Deep from the Lord of the Rings. You are on top of the castle wall and are dropping rocks on assorted monsters that are 15.55 m below you. How long after you release the rock does this happen
A mass-spring system oscillates with an amplitude of 5.60 cm. If the spring constant is 228 N/m and the mass is 454 g, Determine the mechanical energy of the system
Three blocks, each having a mass of 1.21 kg, are connected by rigid rods of negligible mass and are supported by a frictionless surface. Forces F1 and F2, of magnitude 4.95 N and 11.6 N respectively, find The magnitude of the force applied by the r..
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