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A box is fixed to a rope and is kept moving uniformly on a circleof radius 1m the rope exerts a force of 10N on the box. Calculate the work done by the rope on the box?
A 1360 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from the far end of the beam.
assume the earth to be sphere of a uniform density a what is its rotational energy? take the radius of the earth to be
The simple harmonic oscillator can be used as a model for the vibration of a diatomic molecule. Mass and Force Constant are on the order of 10^?26 kg and 10^3 N/m. This model will work if the temperature is sufficiently low (we assume it is in the gr..
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 74.6kg , Jill has a mass of 44.0kg, What is the final speed of the crate if Jill jumps first and then Jack, again in the same..
A person uses corrective glasses of power -8.5 D. If the glasses are worn 2.0 cm from the eye, what is the person's far point without glasses
A ball is launched directly upward from the ground level with an initial speed 24 m/s. What is the greats height reached by the ball
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. what is the mass of the lead block
Two long, straight wires are separated by 0.12 m. The wires carry currents of 1.0 A in opposite directions, as the drawing indicates. Find the magnitude of the net magnetic field at the point A
A magnetic computer disk 7.0 cm in diameter is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at 590 rad/s2 for 1/2 s, Through how many revolutions has the disk turned
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 6.89 103 W. How much energy does it extract from the outside air
How does the solar nebula theory describe the dramatic density difference between the terrestrial and Jovian planets.
when the dried up seed pod of a scotch broom plant bursts open it shoots out a seed with an initial velocity of 2.4 ms
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