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Two masses are suspended with cord that passes over a pulley with negligible mass. The cord also has negligible mass. One of the masses, m1, has a mass of 6.0 kg and the other mass, m2, has a mass of 4.0 kg. The force of the cord attached to m1 is:
An object is moving in simple harmonic motion with amplitude 0.28 m and total energy 2.5 J. What is the total energy of the system now
A 48.9 kg girl is standing on a 129 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is the velocity of the plank relative to the ice surface
a 63-kg water skier is pulled up a 14.0 degree incline by a ropeparallel to the incline with a tension of 512 N. find the magnitude and direction of the skier's acceleration
A block of wood is compressed 2.4nm when inward forces of magnitude 128N are applied to it on two opposite sides. what is the effective spring constant of the block
information is transmitted along a cable in the form of short electric pulses at 100000 pulsessecond. a what is the
A parallel plate capacitor has a surface area of A = 33.2 cm2 and a plate separation of d = 13.3 mm. How much charge does the capacitor store, when it is connected to a battery supplying a voltage of V = 20.3 V?
A 20 g bullet inelastically collides with a 3 kg wooden block at rest. find How much energy is lost in the collision
The slope of a line connecting two points on a velocity versus time graph gives A) instantaneous velocity. B) average velocity. C) instantaneous acceleration. D) average acceleration. I know that its acceleration.. so C or D. Dont know the difference..
A bowling ball (mass = 7.2 kg, radius = 0.14 m) and a billiard ball (mass = 0.47 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
A guitar string is 0.7m long and is tuned to play an E above middle C (330Hz).
A 10kg block is attached to a light cord that is wrapped around the pulley of an electric motor. What is the power output of the motor when it is pulling the block upward with an instantaneous speed of 3m/s and an upward acceleration of 2m/s^2
Suppose the charge of one is increased by twenty seven times while the charge of the other is reduced to one-third its initial value. What would their separation distance have to be changed to in order to keep the force between them the same?
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