Explain the cause of Brownian motion
Briefly define or explain the cause of Brownian motion?
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Molecules in the gas move constantly, freely, arbitrarily, in all the directions and at high speeds. They are capable to do so as the intermolecular force of attraction among the molecules is negligible whenever in a gaseous state. This constant motion of molecules causes them to collide with everything in their path. For illustration, the dust particles will be bombarded through the molecules moving at high speeds, causing them to encompass a zigzag motion.
Brownian motion as well occurs in molecules in a liquid, however to a less obvious extent than in the gas.
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Illustrate the difference between the cathode ray and beta ray?
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The velocity of a body was observed to be constant throughout five minutes of its motion. Determine its acceleration during this interval?
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Describe the reason in short why the length of a standard meter re-defined in the year of 1983?
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