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The speed distribution of molecules in the Earth's atmosphere has a significant impact on its composition.
(a) What is the average speed of a nitrogen molecule in the atmosphere, at a temperature of 18.0 °C and a (partial) pressure of 78.8 kPa?
(b) What is the average speed of a hydrogen molecule at the same temperature and pressure?
The velocity of a ball changes from m/s to m/s in 0.02 s, due to the gravitational attraction of the Earth and to air resistance. What is the rate of change of momentum of the ball
A free floating piston cylinder device that contains 1 kg of a 25% quality saturated mixture of water at 150C, Determine the initial and final pressure, the total energy of electrical work added to the water
Water is being pumped through a horizontal pipe that is 28.8 m long and 17.0 cm in diameter. what gauge pressure must the pump provide to give the same volume flow rate as for the first pipe
A reading on a Geiger counter of 0.23 mrad/h is based on assuming that the measured radiation is due to cesium-137, How many ?-rays does the person's body absorb every second
A uniform electric field with a magnitude of 250N/C is directed in the positive x direction. A 12uC charge moves from the origin to the point (20.0 cm, 50.0 cm). what is the change in electrical potential energy of the system as a result of the ch..
two vehicles of equal mass at a 90 degree intersection. If the momentum of vehicle A is 1.20 x 10^5 kg km/h east and the momentum of vehicle is 8.50 x 10^4 kg km/h north, what is the resulting momentum of the final mass
Suppose the current suddenly increases to 1.55 A in the same direction as before, due to an increase in speed of the bar. Find the emf induced in the rod
A 3000 kg mass moves West at 4.5 m/s and a 4000 kg mass moves South at 3.2 m/s. Find the magnitude and direction of the wreckage
A transparent film has a thickness of 0.003250 cm, and a refractive index of 1.4000. Find the order of interference at theta=0 degrees
A blue car with mass mc = 442 kg is moving east with a speed of vc = 22 m/s and collides with a purple truck with mass mt = 1213 kg that is moving south with a speed of vt = 12 m/s. find the magnitude of the initial momentum of the car
A light beam with wavelength 440. nm in a material then enters air and its wavelength becomes 577. nm. What is the index of refraction for the material
A thin uniform rod (mass = 1.95 kg) swings about an axis that passes through one end of the rod, What is the length of the rod
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