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What physical quantity has the units of length cubed?
Volume is the physical quantity that has units of length cubed. It represents the amount of three-dimensional space occupied by an object.
What physical quantity is defined as units of mass per units of volume?
Density
What is meant by unit of a physical quantity in physics?
The unit of a physical quantity in physics is a standardized way to express and measure that quantity. Units give the quantity a numerical value and specify the scale at which it is being measured. Units are essential for consistency and clarity when communicating about physical quantities.
In imperial system we what measure?
Any physical quantity, but in mostly obsolete units.
What type of quantity is distance?
Distance is a scalar quantity that measures the extent of space between two points. It is a physical quantity that is typically measured in units such as meters or kilometers.
Why is the fundamental value of a quantity not changed when the quantity is multiplied by a conversion factor?
the conversion factor merely changes the number in such a way that it fits the new units the physical quantity is not changed
What is the unit of photometer?
There is no such thing. There are different units, depending on what exactly (what physical quantity) you want to measure.
Why are several units associated with the same physical quantity?
Multiple units may be associated with the same physical quantity due to historical reasons (different regions developing their own units) or different systems of measurement (metric vs imperial). In some cases, units may be related by simple conversion factors, allowing for flexibility in expressing measurements.
What kind of physical quantity is a length?
Length is a fundamental physical quantity that measures the distance between two points in space. It is a scalar quantity, meaning it has magnitude but no direction. Length is typically measured in meters in the International System of Units (SI).
What is meant by unit of a physical quantity?
A unit of a physical quantity is a standardized quantity used to express measurements. These units help provide a clear and consistent way to quantify different physical properties such as length, mass, time, and temperature. Units allow for effective communication and comparison of measurements across different contexts.
Can a quantity be dimensionless and have no units?
Yes, a dimensionless quantity is a quantity that does not have any physical dimensions or units. It is a pure number or ratio that represents a comparison between two quantities. Examples of dimensionless quantities include angles, ratios, and pure numbers like pi.
Can a quantity have units but still be dimensionless?
No. "Dimensionless" means there are NO units involved.
