Practice NAT questions with answers and explanations.
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Alphabetical order gives A, B, I, N, R.
Therefore, BRAIN becomes ABINR.
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Vector addition replaces multiple vectors with an equivalent single vector.
Its direction and magnitude depend on the original vectors.
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The mapping is 7→9, 8→0, and 9→1.
The code is 901.
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Perpendicular vector components form a right triangle.
The resultant magnitude is found from the sum of squared components.
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Swap A-B, C-D, and E-F.
This produces BADCFE.
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One kilometre equals 1,000 metres.
Therefore 3.5 km = 3.5×1,000 = 3,500 m.
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The code is the number of letters.
KEYBOARD contains eight letters.
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One metre equals 100 centimetres.
Therefore 250 cm ÷ 100 = 2.5 m.
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The metre is the SI base unit of length.
Other metric length units are derived from it using prefixes.
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Percentage uncertainty is absolute uncertainty divided by measured value times 100.
0.2/10.0×100 = 2%.
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The kilogram is the SI base unit of mass.
The gram is one-thousandth of a kilogram.
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The second is the SI base unit of time.
Minutes and hours are accepted non-SI units derived from it.
