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Calculate the mean free path of air molecules at a pressure of 4.50×1013atm and a temperature of 300K. (This pressure is readily attainable in the laboratory.) Model the air molecules as spheres with a radius of 2.00×1010m .
A small, 300g cart is moving at 1.90m/s on an air track when it collides with a larger, 5.00kg cart at rest. What is the speed of the large cart after the collision
An oversimpliefied model of the hydrogen atom has the electron orbiting the nucleus's proton at a distance of approximately 5.29x10^-11 m. how much force is needed to keep the electron in a circular orbit
Given that the weight of dry sandstone sample in air is 20.0g, the weight of saturated sample in air is 22.5g, What is the bulk volume of this sample and what is its porosity
A 58 kg man is riding on a 50 kg cart traveling at a speed of 3.1 m/s. He jumps off with zero horizontal speedrelative to the ground. What is the resulting change in the cart's speed
A 2.00 g plastic bead charged to -4.00 nC and a 4.00 g glass bead charged to +8.00 nC are 2.00 cm apart, find the initial accelerations of the plastic bead
In a model AC generator, a 501 turn rectangular coil 10.0 cm by 23 cmrotates at 123 rev/min in a uniformmagnetic field of 0.6 T. What is the maximum emf induced in the coil?
A passenger walks from one side of a ferry to theother as it approaches a dock. What is the magnitude of the ferry's velocity relative to the water
a 110 g copper calorimeter cup contains 205 cm3 of water and 50 g of ice all in thermal equilibrium. a 215 g piece of
An airplane pilot wishes to fly to his destination 500 mi due west, but the wind is blowing at 21.5 mi/hr toward 18.9° north of west. what will be the speed of the plane relative to the ground
A 26 gram of copper pellets are removed from a 300oC oven and immediately dropped into 110m L of water at 17oC in an insulated cup. Find what will the new water temperature be
A puck of mass 80.0 g and radius 4.50 cmslides along an air table at a speed of 1.50 m/s, What is the velocity of the center of mass
A spherical water drop, 1.70 meter in diameter, is suspended in calm air owing to a downward-directed atmospheric electric field E = 502 N/C. Determine how many excess electrons does the drop have
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