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If a heat engine is operating at a coefficient of performance of 2.50 and 3.00 J of heat is absorbed from the surroundings, determine the magnitude of heat expelled.
how much time passes before the brick lands on the ground.
An unstretched spring has a length of 0.30 m. while the spring is stretched to a total length of 0.60 m, it supports traveling waves moving at 4.5 m/s. How fast would waves travel on this spring if it is stretched to 0.90 m.
What is the rate of change entropy of the first reservoir.
find coefficient of kinetic friction between m1 and shelf.
What is torque exerted by the fish about an axis
A cable is used to raise a 29kg urn from an underwater archeological site. There is a 21 N drag force from the water as the urn is raised at a constant speed.
A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane . Determine the speed of the block after it has traveled 1.80 along the plane, ..
Throughout a nuclear reactor accident, 570 m3 of water at 20o C is pumped into the reactor core which is producing heat at the rate of 250 MW. If the water is allowed to boil at normal atmospheric pressure how long would it take to boil away all this..
You swing a 2.60 kg stone in a circle, using the full length of a thin 60.0 cm rope. At what speed must you swing it so its acceleration will be 9.8 m/s^2.
Just after each jumps, that person is moving away from the crate with a speed of 4.40 m/s relative to the crate.
A 3.5 m long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam.
You travel from "point" Columbia to St. Louis in a car moving at a constant speed of 60 km/h. Then you travel back from St. Louis to Columbia the same distance moving at a constant speed of 120 km/h.
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