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A cable lifts a 990 kilogram elevator at a fix velocity for a distance of 37 meter. Find the work done by each of the following?
(a) The tension in the cable
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(b) The elevator weight
A 20.0 kg box rests on a table. What is the weight of the box and the normal force acting on it
A copper ball with a radius of 1.47 cm is heated until its diameter has increased by 0.198 mm. Assuming an initial temperature of 21.3°C, calculate the final temperature of the ball
An electron beam is deflected upward through 3.23 mm while traveling in a vacuum between two deflection plates 11.6 mm apart, What is the kinetic energy of each electron when it leaves the space between the plates
A person on earth notices a rocket approaching from the right at a speed of 0.74c and another rocket approaching from the left at 0.52c. What is the relative speed between the two rockets
A grenade is accidentally dropped with a soldier will scaling a 55.0-m high cliff. How long will it take the grenade to fall to the ground (ignoring air resistance)? How fast is the grenade be travelling?
identical point charges of 3.0e-6c are fixed to 3 of the 4 corners of a square. what is the magnitude q of the negative
A rock of mass 42 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
A 25-? resistance is connected in series with a 30-mH inductance and a 12-µF capacitor, obtain the power dissipated in the circuit
A cannonball is fired from a canon at an angle of 45 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. How far will the cannonball go before it hits the ground
A car goes around a curve on a road that is banked at an angle of 35.0^\circ. What is radius of curve
In a Compton scattering experiment, an x-ray photon scatters through an angle of 21.0° from a free electron that is initially at rest. The electron recoils with a speed of 2,520 km/s.
calculate the orbital period of pluto in yr from knowledge of g the mass of the sun m 1.99times1030 kg and the orbital
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