what is meant patch cards..
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How dies fanning produce a sense of coolness to the face ?
USE OF PHYSICS
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How do fireworks turn into shapes like hearts and stars?
WHO IS THE FATHER OF CALCULUS,LIBNIEZ OR NEWTON?
What generates seismic waves?
What is black body ?
Explain the applications of nmr spectroscopy?
Who determined that the square of a planets period is proportional to the cube of its average distance from the sun?
What do you mean by newton meter?
Explain what is the measure of the force of gravity on an object?
Why are prisms used in binoculars ?
a ball of mass 500g moving with a velocity of 10m/s collides with another ball of mass 250g.after the impact,the second ball moved off with a velocity of 8m/s calculate the final velocity of the first ball.