To mesure a physical quantity what do we need
(a) unit
(b) numerical value
(c) direction
(d)unit and a numerical value
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To mesure a physical quantity what do we need
(a) unit
(b) numerical value
(c) direction
(d)unit and a numerical value
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Explanation:
option a
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Answer:
Rulers are used to measure length, balances (scales) are used to measure mass (weight), and graduated cylinders or pipettes are used to measure volume. Measurements made using these devices are expressed as quantities. A quantity is an amount of something and consists of a number and a unit.