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Why we feel sky blue in color? The blue color of the sky is because of Rayleigh scattering. As light moves by the atmosphere, most of the longer wavelengths pass straight thr
A monochromatic light of wavelength 6000Å is incident on a plane diffraction grating with grating element 6 X 10 -5 cm. Evaluate the maximum order of spectrum that will be observe
Explanation on forces and how to create force diagrams
A model elevator A working model of an elevator can simply be made from easy materials. For the rotating drums or sheaves, metal coffee tin will do. With a hammer and a big nai
What is Gravity Gravity is a force which holds you in your seat. If I pull the chair out from under you, what will take place? Ouch! Gravity fast pulls you down to the floor. I
Explain about Atoms Atoms - having of a nucleus (central core) and orbiting electrons. Nucleus have protons (+ particles) and neutrons (neutral particles). Neutral atoms have
Explain the Energy Again, we have all heard about energy. When the alarm clock rings in the morning we roll over and say, “I do not want to get up, I have no energy this mornin
what is specfic gravity
a column of water contains fine metal particles of radius 2*E(-8) m, which are in thermal equillibrium at 298 K. if there are 1000 particles per unit volume at a given height,how m
What is the change in temperature of water after falling over a 50.0-m-tall waterfall? Suppose that the water is at rest just before falling off and just after it reaches the b
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