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Coasting along at 8.10 m/s, a 60.0 kilogram bicyclist on an 8.40 kilogram bicycle encounters a small hill. If the speed of the bicyclist is 6.00 m/s at the top of the hill, compute how much work was done on the bicyclist and her bike?
I lift a 3 kg rock up and place it on a table 2 meters above the ground. How much gravitational potential energy does the rock have
At what coordinate on the axis is the net electric field produced by particles equal to zero.
A brick of mass M has been placed on a rubber cushion of mass m. Together they are sliding to the right at constant velocity on an ice-covered parking lot.
The mass of a gas molecule can be computed from its specific heat at constant volume, cv. Take cv = 0.148 cal/g°C for neon and calculate the mass of a neon atom
a test rocket is fired vertically upward from a well. a catapult gives it an initial speed of 81.0 ms at ground level.
A parallel plate vacuum capacitor is connected to a battery and charged until the stored electric energy is u, Find u, the energy dissipated in the resistor
A ladder of length L = 2.4 m and mass m = 14 kg rests on a floor with coefficient of static friction ?s = 0.56. Assume the wall is frictionless. find the normal force the floor exerts on the ladder
Water at a gauge pressure of P = 3.4 atm at street level flows into an office building at a speed of 0.90m/s through a pipe 5.6 cm in diameter. find the gauge pressure in the pipe on the top floor
A vibrating source generates a harmonic wave on a string underconstant tension. If the power delivered to the string is doubled, by what factor does the speed change
A tank having a volume of 0.10 m3 contains helium gas at 155 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.30 -m in diameter at an absolute pressure of 1.3 atm.
a bullet weighing 50 grams and traveling at 200 ms is shot into a stationary block of wood weighing 4 kg where it
A 14,240N car is traveling along a highway at 95.0 kn/hr. If the driver immediately applies his breaks, what average force acted upon the car
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