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Which of the following is a scalar quantity?
Which law explains why a rocket moves forward by expelling gas backward?
What type of lens is used to correct short-sightedness (myopia)?
Which instrument is used to measure atmospheric pressure?
Which physicist proposed the theory of general relativity?
Which particle has no electric charge?
What is the unit of frequency?
What causes the phenomenon of a rainbow?
Which law states that pressure and volume of a gas are inversely proportional at constant temperature?
What is the SI unit of electric resistance?