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The skier has just begun descending the 30 degree slope. The coefficient of sliding friction is 0.10. Calculate (a) the skier's acceleration (b) the speed they'll reach after 6.0 seconds.
Two charges A and B are fixed in place, at different distances from a certain spot. At this spot the potentials due to the two charges are equal, Calculate the ratio qB/qA of the charges
A +3.07 nC point charge is placed at one corner of a square (1.90 m on a side), and a -6.51 nC charge is placed on the corner diagonally opposite. What is the magnitude of the electric field at either of the other two corners?
Three moles of an ideal gas undergo a reversible isothermal compression at 21.5°C. During this compression, 1870 J of work is done on the gas. What is the change of entropy of the gas?
A meter stick and a two-meter stick have the same thicknesses and density. They are both placed upright and balancing on one end. Which one hits the ground first
A solid brass (bulk modulus 6.7 x 10^10 N/m^2) sphere is subjected to a pressure of 1.0 x 10^5 Pa due to the earth's atmosphere. On Venus the pressure is 9.0 x 10^6 Pa. By what fraction change in radius/ initial radius does the radius sphere change w..
A basketball of mass 0.45 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.72 m. How much mechanical energy was lost during the collision with the floor
question a particle with a mass of 1.00 10-5 kg and a charge of 2.3 microc is released in a parallel-plate uniform
A large storage tank, open to the atmosphere at the top and filled with water, develops a small hole in its side at a point17.6m below the water level. Determine the speed at which the water leaves the hole
determine the tangential and centripetal components of the net force exerted on a car by the ground when its speed is
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3. What must be the minimum diameter of the spherical balloon
0.20 g of hydrogen gas are held in a rigid container. the temperature of the gas is changed from 50 K to 80 K. How much heat is needed
the speed of a transverse wave on a string is 479 ms while the wavelength is 0.257 m. the amplitude of the wave is 2.06
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