Question

21. Define the terms power ,momentum, immunization ​

Answer 1

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1. In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. In older works, power is sometimes called activity. Power is a scalar quantity
2. A vector quantity that is the product of the mass and velocity of an object or particle is 'momentum'.
3. A process by which a person becomes protected against a disease through vaccination. This term is often used interchangeably with vaccination or inoculation.