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A glass coffee pot has a circular bottom with a 9.00cm diamteter in contact with a heating element that keeps the coffee warm with a continous heat transfer rate of 50.0w.
A) what is the temperature of the bottom of the pot, if it is 3.00mm thick and the inside temperature is 60.0 C
B) if the temperature of the coffee remains constant and all of the heat transfer is removed by evaporation, how many grams per minute evaporate? take the heat of vaporization to be 2340Kj/Kg.
A stone has a mass of 6.00 x10-3 kg and is wedged into the tread of an automobile tire. The coefficient of static friction between the stone and each side of the tread channel is 0.84.
Assuming that the pass was thrown at the optimal 45 ^circ angle, evaluate what was the speed at which the ball left the quarterback's hand?
A stone is dropped into a river from a bridge 43.90 m above the water. Another stone is thrown vertically down 1.00 after the first is dropped. The stones strike the water at the same time.
What would be the equilibrium temperature when a 256 g block of copper at 314 °C is placed in a 140 g aluminium calorimeter cup containing 827 g of water at 11.5 °C.
Calculate change in kinetic energy
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s the speed of a wave on a string that has a mass of 3.3 kg and a length of 1.9 m while a 6.3 kg mass is hanging from the end?
Motor M draws in the cable with an acceleration of 4 ft/s^2, measured relative to the 200 lb mine car. Determine the acceleration of the car and the tension in the cable. avoid the mass of the pulleys.
Draw a motion diagram for the train. Assume that the train is moving toward the right and starts to slow down at t = 0. The separation of each dot represents an elapsed time of one second.
When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39 m. Compute the horizontal distance the ball would travel if the same spring were aimed 28.0 deg from the horizontal.
What is the mass of sculpture (in kg) assume that the local acceleration due to gravity is 9.80 m/s2.
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