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A refrigerator has to transfer an average of 263 J of Heat per second from -10°C to 25°C.Calculate the average power consumed. Assume that the refrigerator is ideal.
A thin spherical shell of mass 0.450 kg and diameter 0.210 m is filled with alcohol ( = 806kg/m3). Find the acceleration of the alcohol filled shell asit rises toward the surface of the water
Compare the magnitudes of the gravitational force of attraction and the electric force of attraction between the electron, Find the ratio of the electric force to the gravitational force
If a car takes a banked curve at less than the ideal speed, friction is needed to keep it from sliding toward the inside of the curve, What is the minimum coefficient of friction needed for a frightened driver to take the same curve at 15.0 km/h
A long jumper leaves the ground at an angle of 20.0o to the horizontal and at a speed of 11.0 m/s. How far does he jump
A mass of 5.0 kg is attached to one end of a spring with a spring constant 80 N/m. The other end is attached to a rigid wall. The spring is initially at rest in its equilibrium position, then a force of 100 N pulls the mass away from the wall, str..
A skier traveling 12.0 m/s reaches the foot of a steady upward 18° incline and glides 11.2 m up along this slope before coming to rest. What was the average coefficient of friction
Two wheels have the same mass and radius of 4.8 kg and 0.54 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational..
A particle of mass m moves on a smooth horizontal table. It is attached to a light, inextensible string that passes through a small hole in the table and carries a mass m, which hangs vertically. Find the Lagrangian of the system as a whole.
Find the reactance of the capacitor and the maximum current in the circuit. (When entering units, use ohm for Ω.)
Suppose your body was able to use the chemical energy of gasoline. How far could you pedal a bicycle at 15 km/hr on the energy in 3.0gal of gas
A certain gasoline engine has an efficency of 30% what would the hot resevoir temp be for a carnot engine having that efficency if it operates with a cold resevoir temp off 200C
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power delivered to the circuit?
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