Question:
Dimension
Answer:
- In physics, a dimension represents a fundamental quantity or characteristic of a physical system. The dimensions are independent, and they form the basis for expressing other physical quantities.
- There are commonly accepted fundamental dimensions such as length (L), mass (M), time (T), electric current (I), temperature (Θ), amount of substance (N), and luminous intensity (J).
- Every physical quantity can be expressed as a product of powers of these fundamental dimensions. For example, velocity has dimensions of [L][T]⁻¹ (length divided by time), and force has dimensions of [M][L][T]⁻² (mass times acceleration).
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