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Explain thew laws of physics
It is thought that the laws of physics do not change from place to place. This is why experiments carried out in different countries by dissimilar scientists - of any religion or race - have always led to the same results if the experiments have been done honestly and correctly. We also think that the laws of physics today are the same as they were in the past. Evidence, contained in the light that left distant stars billions of years ago, strongly shows that the laws operating at that time were no dissimilar than those today. The spectra of different elements then and now are impossible to tell apart, even though physicists have looked very carefully.
Photoelectric effect An effect described by A. Einstein that demonstrates that light appears to be built up of photons or particles. Light can do excite electrons (called phot
An inter metallic compound having the chemical formula A 3 B, where A represents a transition element and a crystal structure in which the B atoms are located as the corners and in
A bar magnet is overhanging vertically above a closed coil of wire. The bar magnet is unconfined. It remainder vertical as it come near the coil falls straight through the coil and
What is an alloy? An alloy is a homogeneous hybrid of two or more elements, at least one of which is a metal, and where the resulting material has metallic properties. The resu
Organic & polymer solar cells are made from thin films (typically 100nm) of organic semiconductor such as polymer and small molecule compounds like poly phenylene vinylene, copper
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
Determinism principle It is the principle that if one knows the state to an infinite accuracy of a system at one point in time, one would be capable to know about the state of
All solar cells require a light absorbing material contained within the cell structure to absorb photons and generate electrons via the photo voltaic effect. The materials used in
tiger woods can hit a golf ball with 55n of force how hard does the ball hit back on the club
South African frogs are capable of jumping as far as 10.0m in one hop. Suppose one of these frogs makes exactly 15 of these jumps in a time interval of 60.0s. What is the frogs ave
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