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4.40×10^23 nitrogen molecules collide with a 14.0cm^2 wall each second. Assume that the molecules all travel with a speed of 360m/s and strike the wall head on. What is the pressure on the wall?
What was the temperature of the water before the insertion of the thermometer.
the cable cars in san francisco are pulled along their tracks by an underground steel cable that moves along at 9.5 .
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 125 pm. What is the change in the electron's energy
a pair of eyeglass frames are made of an epoxy plastic coefficient of linear expansion 1.30 10-4degc-1. at room
A converging lens with a diameter of 30.0 cm forms an image of a satellite passing overhead. what is the altitude of the satellite
Think of the relationship between Kirchoff's Junction Rule and conservation of charge, Why cant charge build up at a junction of wires
A uniform 1.7-kg rod that is 0.97 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are..
A hydrogen atom is in the n = 22 state. Use the Bohr model of the hydrogen atom, find the potential energy of the atom
a point is located in a polar coordinate system by the coordinates r 2.5 m and 0 35 degrees. find the x- and y-
A 134g baseball moving 28.6 strikes a stationary 5.20kg brick resting on small rollers so it moves without significant friction. What is the baseball's speed after the collision
A 13 cm × 13 cm × 13 cm box containes 0.025 mol of nitrogen at 30°C. What is the rate of collisions (collisions/s) on one wall of the box
A proton moves perpendicular to a uniform magnetic field. Its trajectory is a circle of radius 0.31 m with a period of 2.1 10-7 s. find the magnitude of centripetal force exerted on the proton
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