Conservation of energy
20000N, 2.47 meter cannon, 40 degrees above horizontal, 74 meters/second, conservation of energy, what sized cannon ball, in kg, must be used?
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Object A, which has been charged to +10nC, is at the origin. Object B, which has been charged to -22nC, is at (x,y)=(0.0cm,2.0cm). What is the magnitude of the electric force on object A? What is the magnitude of the electric force on object B? Wh
A spaceship moves away from Earth at a speed 0.874c and fires a shuttle craft that then moves in a forward direction at 0.21c relative to the ship. The pilot of the shuttle launches a probe forward at a speed of 0.412c relative to the shuttle. Det
A car drives straight off the edge of a cliff that is 47 m high. The police at the scene of the accident observed that the point of impact is 122 m from the base of the cliff. How fast was the car traveling when it went over the cliff?
Mr. Physics drops a rock down a 250 meter deep well. How soon after he drops the rock does he hear it hit the bottom of the well?
A tank having a volume of 0.100 m3 contains helium gas at 130 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.45 atm?
A 13 kg block is at rest on a level floor. A 405 g glob of putty is thrown at the block such that it travels horizontally, hits the block, and sticks to it. The block and putty slide 15 cm along the floor. If the coefficient of sliding friction is
Calculate the adiabatic exponent of mixture of two gasses and b. a and b have adiabatic exponent ya and yb respectively. and molar fraction fa and fb respectively.
At the bottom her speed is precisely two-thirds what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
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