Question

List the seven fundamental dimensional units of the SI, their unit symbols, and their variable symbols. Explain the difference between the unit symbol and the corresponding formula symbol.

a) Length (L), Mass (M), Time (T), Temperature (θ), Current (I), Amount of substance (N), Luminous intensity (J)
b) Meter (m), Kilogram (kg), Second (s), Kelvin (K), Ampere (A), Mole (mol), Candela (cd)
c) X, Y, Z, A, B, C, D
d) A1, B2, C3, D4, E5, F6, G7

Answer 1

The seven fundamental dimensional units of the SI are length (L), mass (M), time (T), temperature (θ), current (I), amount of substance (N), and luminous intensity (J). The unit symbol is the abbreviation used to represent the unit, while the corresponding formula symbol is the variable symbol used to represent the quantity in equations or formulas.

Step-by-step explanation:

The seven fundamental dimensional units of the SI (International System of Units) are:

1. Length (L): symbolized by 'm' (meter) and variable symbol 'L'
2. Mass (M): symbolized by 'kg' (kilogram) and variable symbol 'M'
3. Time (T): symbolized by 's' (second) and variable symbol 'T'
4. Temperature (θ): symbolized by 'K' (kelvin) and variable symbol 'θ'
5. Current (I): symbolized by 'A' (ampere) and variable symbol 'I'
6. Amount of substance (N): symbolized by 'mol' (mole) and variable symbol 'N'
7. Luminous intensity (J): symbolized by 'cd' (candela) and variable symbol 'J'

The unit symbol is the abbreviation used to represent the unit, while the corresponding formula symbol is the variable symbol used to represent the quantity in equations or formulas.