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What are the three fundamental dimensions used in Physics?
Length, mass, and time are the three fundamental dimensions on which the measurement of all physical quantities is dependent.
Is this true that conversion factor is a ratio of equivalent values used to express the same units in different quantities?
No. The same quantities in different units.
What does units agree mean?
In mathematics, two quantities are said to be in units agreement if they have the same units of measure. For example, if two quantities are both measured in meters, then they are in units agreement. If one quantity is measured in meters and the other is measured in centimeters, then they are not in units agreement.
Must quantities have different units before they can be added or subtracted?
no
What is a ratio that compares two quantities that are measured in different units?
what is it
Which physical quantities does not have units?
specific gravity
What are three physical quantities with units?
Length (meters) Mass (kilograms) Time (seconds)
Why are there 7 fundamental physical quantities and not more?
The 7 fundamental physical quantities were chosen because they are considered independent and cannot be derived from other physical quantities. These 7 quantities (length, mass, time, electric current, temperature, amount of substance, and luminous intensity) form the basis for all other physical measurements in the International System of Units (SI). Additional fundamental quantities can be derived from these 7, making them sufficient for describing physical phenomena comprehensively.
What are those derived quantities in units?
Derived quantities are physical quantities that are derived from base quantities through mathematical operations like addition, subtraction, multiplication, or division. These derived quantities are also represented in units based on the units of the base quantities used in their calculation. Examples of derived quantities include velocity, acceleration, and density.
What refers to quantities such as area volume and velocity?
These quantities are referred to as physical quantities in the field of physics. They are measurable properties that can be described using mathematical values and units. Area and volume are examples of scalar physical quantities, while velocity is an example of a vector physical quantity.
Types of physical quantities?
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).
What are the fundamental quantities?
The fundamental quantities are physical quantities that are independent and cannot be derived from any other physical quantities. There are seven fundamental quantities in the International System of Units (SI): length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
What is the following units that can only describe scalar quantities?
Units such as meters, seconds, kilograms, and kelvin are examples of units that can only describe scalar quantities. These units do not have a direction associated with them and only quantify the magnitude of a physical quantity.
Why do you need to measure physical quantities and express them using the appropriate units?
to know what is the measure
What are the physical quantities and units included in determining speed?
-- The physical quantities involved in speed are distance and time. -- Some popular units of distance include the mile, foot, kilometer, smoot, and parsec. -- Some popular units of time include the second, month, week, fortnight, and year.
Which of these physical quantities does not have any units specific gravity resistance distance inertia?
what is the smallest prime number
Which physical quantities does not have any units?
Pure numbers, including ratios and angles, do not have units. For example, the fine structure constant, the mathematical constant pi, and the coefficients in a balanced chemical equation are all unitless quantities.
