On an electric schematic, what does the symbol of a horizontal line interrupted by a saw tooth shaped line represent?
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What is the normal pulse beat of a human body?
Explain about Gases ?
pressure is greater at the time of walking or standing when ?
What is a Compound ?
What is the force needed to accelerate a mass of one kilogram one meter per second per second?
Why are the tides produced in the sea ?
When a glass cylinder is filled with water and a piece of thick paper is placed at the mouth and the cylinder is inverted, the paper dies not fall. Why ?
Why a pen used for writing with ink is always split as its pointed end?
egg or hen which came first
What is audio frequency?
Why does heat cause matter to expand?
Define weight?