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An engine is used to lift a 2700 kg truck to a height of 3.0 mat constant speed. In the lifting process, the enginereceived 3.3 x 105 J of heat from the fuel burned in itsinterior. What is the efficiency of the engine? How do I set up this thermo dynamics problem?
A tugboat pulls two barges with a force of 3000N. The water slows each of the boats with a force of 200N (3 total forces of 200N each). what is the accleration of the boats
The mass of a robot is 3780 kg. This robot weighs 3540 N more on planet A than it does on planet B. What is the difference MA - MB in the masses of these planets
A hot air ballo0n is ascending straight up at a constant speedof 7.0 m/s. When the balloon is 12.0 m above the ground, How far above ground level are these places
16g of nitrogen gas at STP are adiabatically compressed to a pressure of 22 atm. What is the heat input to the gas
An electron travels with speed 1.0*10^7 m/s between two parallel charged plates. The plates are separated by 1.0 cm, What is the direction of the magnetic field
Two small plastic spheres are given positive electrical charges. When they are 15 cm apart, the repulsive force between them has magnitude of 0.220N. what is the charge on each sphere
A small block is attached to an ideal pring and is moving in SHM on a horizontal, frictionless surface, What is the frequency of the motion
A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 36.9° past the lowest point on its way up, determine the speed and velocity of the ball
A railroad car of mass 2.00 x 10^4 kg is traveling north 6.00 m/s and collides with a railroad car of mass 1.50 x 10^4 kg traveling south 4.00 m/s, Find the velocity of railroad cars if the lighter car is intially at rest
A child rides a horse in a circular path on a merry-go-round. how far is the horse from the center of the merry-go-round
At what angle should a curve of radius 155m be banked, so cars can travel safely at 26m/s without relying on friction.
The motor of a four wheeler traveling along a muddy trail generates an average power of 7.20 104 W when moving at a constant speed of 11 m/s. What is the tension in the tow rope pulling the log
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