What are isotopes?
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What is the laws of dry or solid friction.
How spectral lines show discrete energy levels in an atom. : quantum physics
what is overall expansion,hp expansion,ip expansion and axial shaft of a steam turbine?
Explain what is h1n1?
What sound waves travel from air to water the frequency remains?
When is fluorescence strong?
does plane mirror produce real image?how?
Explain the Welding ?
what is meant patch cards..
How can the presence of an element in a distant star detected ?
Tell me what is ion pair energy?
what are the Newtons principles? what is mean by gravitational force? what is mean by space technology? what is the use in space technology?