What is the work done on the tennis ball
A tennis player receives a volley with the ball (0.0600 kg) traveling horizontally at 51.0 m/s and returns the ball so that it travels horizontally at 42.0 m/s in the opposite direction. What is the work done on the tennis ball?
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If 122mL mL of a 1.0M M glucose solution is diluted to 550.0mL mL , what is the molarity of the diluted solution?
A hot iron horseshoe (mass=0.40 kg), just forged is dropped into 1.35 L of water in a 0.30-kg iron pot initially at 20 degree celsius. If the final equilibrium temperature is 25.0 degree cesius, estimate the initial temperature of the hot horsesh
When they are relaeased from rest will they start to move? If so determine their acceleraton and the tension in the string. If not determine the sum of the magnitudes of the forces of friction acting on the blocks.
The equivalence point is reached when 28.38 of solution is added. What is the concentration of the unknown solution?
A flywheel with a very low friction bearing takes 1.9 h to stop after the motor power is turned off. The flywheel was originally rotating at 34 rpm. What was the initial rotation rate in radians per second?
How many hydrogen sulfide molecules would be required to reach the lethal dose in a room that is 77 feet long, 62 feet wide and 50. feet tall at 1.0 atm and 25.0 oC?
The battery has internal resistance of 0.100 Ω, and the rod and rails have negligible resistance. A 2.02 T magnetic field is directed perpendicular to the plane of the circuit. (a) Find the magnetic force on the rod.
A sample of 0.6760 g of an unknown compound containing barium ions (Ba2+) is dissolved in water and treated in excess Na2SO4. If the mass of BaSO4 precipitate that forms is 0.4105 g. What is the percentage by mass of Barium in the original unknown
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