What is the effect of using two converging lenses in one optical instrument?
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is the below statement correct. the force of attraction of earth on a man, who is inside the artificial satellite is zero
Explain radio telescopes?
Is there god and what is the difference between energy in space and so called goddly energy
Explain what formula is most appropriate to compute the kinetic energy of a block of ice sliding down an inclined plane?
which one of the following does a tv remote control unit used to operate a tv ? a)light waves b) sound waves c) micro waves d) radio waves
Explain what is time?
How can you estimate the height of a bridge by dropping a stone from it ?
How spectral lines show discrete energy levels in an atom. : quantum physics
How dies fanning produce a sense of coolness to the face ?
Why ate some clocks slow in summer and fast in winter ?
Explain the Dew Point ?
Explain refraction?