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A force of 20 N is applied at the edge of a wheel of radius 40 cm. Find the torque acting on the wheel?
A crate of mass 12.5 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline, How much mechanical energy is lost due to friction
A 0.25kg ball moving in a circle at the end of a string has a cantripetal acceleration of 4 m/s^. What is the magnitude of the centripetal force
A Carnot engine has a power output of 130 kW. The engine operates between two reservoirs at 20°C and 500°C, How much energy does it take in per hour
A generator connected to an RLC circuit has an rms voltage of 140 volts and an rms current of 33 mega-amps. what is the inductive reactance of the circuit
An unstable atomic nucleus of mass 17 x10-27 kg initially at rest disintegrates into threeparticles. evaluate the velocity of the third particle
A helicopter is moving horizontally to the right at aconstant velocity. The weight of the helicopter is W =53800N. what is the magnitude of the lift force
Consider a camera that moves its lens back and forth to focus on objects near and far. As an object approaches, what direction should the lens move
A rectangular fish tank measures 20 cm by 60 cm by 40 cm high. The tank is filled with water to a depth of 37 cm. What is the pressure at the bottom due to the water
An artificial earth satellite has a circular orbit of radius 7.10 multiply.gif 106 m in an equatorial plane. Compute the (constant) speed of the satellite
A force acting on an object moving along the x axis is given by Fx = (14x ? 3.0x2) N, How much work is done by this force as the object moves from x = ?2.0 m to x = +1.0 m
A 71kg pole-vaulter falls from rest from a height of 4.6m onto a foam-rubber pad. The pole-vaulter comes to rest 0.4s after landing on the pad.
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude - by using his pulse to time the period of swinging lamps, How long is the lamp chain
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