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A 50.0-kg pole vaulter running at 10.0 m/s vaults over thebar. Her speed when she is above the bar is 1.0 m/s. Neglect air resistance, as well as any energy absorbed by the pole,and determine her altitude as she crosses the bar.
during the time 0.315 mol of an ideal gas undergoes an isothermal compression at 21.0degc 530 j of work is done on it
A toy car of mass 2.0 kg is stationary and a child rolls a truck of mass 3.5kg straight toward it with a speed of 4.0 m/s. What is the velocity of the center of mass of the system
A certain freely falling object requires 1.7s to travel the last 40m before it hits the ground. From what height above ground did it fall.
a driver must change a tire that has a stuck lug nut. a torque of 288 inch-pounds is required to free the nut. how
A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is h = 1.8 m, and the radius of the Earth is R = 6.38 x 106 m. (a) How far is it to the horizon? In other word..
What will be the vertical position of the boat. In the frame of reference of the truck, at what angle to the vertical does the boy throw can.
a particle has a velocity u 0.84c in the labortory. the laboratory is itself moving with velocity v 0.77c relative to
the new earth-pluto supershuttle line boasts that it can take you between the two planets which are about 5.0 h apart
The moving non-conducting belt of a Van de Graaff generator carries 10 µC of charge up to the metal sphere each second, What minimum power must be supplied to the generator to sustain its operation
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.70 cm. find the friction force exerted by the nozzle on the stopper
Let's build a helium atom. Start with a nucleus with 2 protons and 2 neutrons, Calculate the energy gained by the system constructing this atom
How close to the edge of the 28.0 kg table, that is 2.2m with legs 1.2m apart, can a 62.0 kg person sit without tipping it over.
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