A dimensionless quantity (a) never has a unit, (b) always has a unit, (c) may have a unit, (d) does not exist.
Answered Feb 05, 2023
(c) may have a unit,
Explanation:
Dimensionless quantities may have units.
(c) either metals or non-metals
(a) Always....
Correct answer is (D) always a non-zero number
N (unlike P) lacks the d-orbital. This restricts nitrogen to expand its coordination number beyond four. Hence, R3N=O does not exist.
Potato chips are tasty but they are not very nutritious. Boiled vegetables are very nutritious but they may not be tasty.
(a) never has a nonzero dimension, Explanation: A unitless quantity never has a non-zero dimension.
(c) is perpendicular to the acceleration for one instant only Explanation: In projectile motion, velocity is perpendicular to acceleration only at the highest point. Here, velocity is along the horizontal direction and...
(a) never has a nonzero dimension,
Electric potential. It is a scalar quantity.
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