Rate
The gradations are in micrometres.
The derived quantity is a quantity which has been derived from 2 or more base quantities. Example: Velocity is the rate of change of distance and is written in terms of distance divided by time which are two base quantities.
The ratio of two equal quantities is 1 .
An equation states that the two quantities on each side of the equal sign are equal.
Physical quantities can be broadly categorized as scalar or vector quantities. Scalar quantities have only magnitude, like mass or temperature, while vector quantities have both magnitude and direction, like velocity or force. Other types of physical quantities include derived quantities (obtained from combinations of base quantities) and dimensionless quantities (without units).
The two types of physical quantities are scalars and vectors. Scalars are quantities that only have magnitude, such as time, mass, and temperature. Vectors are quantities that have both magnitude and direction, such as velocity, force, and displacement.
Rate
Direct relationships and inverse relationships. In direct relationships, two physical quantities change in the same direction (e.g., as one increases, the other also increases). In inverse relationships, two physical quantities change in opposite directions (e.g., as one increases, the other decreases).
Base quantities are fundamental physical quantities that cannot be defined in terms of other physical quantities. They are used as building blocks in expressing other physical quantities. Derived quantities, on the other hand, are physical quantities that are derived from combinations of base quantities through multiplication and division with or without other derived quantities.
Basic quantities are physical quantities that are independent and cannot be defined in terms of other physical quantities, such as length, time, and mass. Derived quantities, on the other hand, are physical quantities that are defined in terms of one or more basic quantities, such as speed, acceleration, and force.
Entropy and work (by non-conservative force ) are not conserved
Physical quantities that need both magnitude and direction for its complete description are known as vector quantities. Physical quantities that need only direction for its complete description are known as scalar quantities.
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All other quantities which described in terms of base quantities are called base quantities.
There are two main types of physical quantities: Scalar quantities, which have only magnitude, and vector quantities, which have both magnitude and direction. Scalars include distance, speed, and temperature, while vectors include velocity, force, and displacement.
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