Fundamental and Derived Quantities in Physics

Pound

<p>$\frac{\Delta Z}{Z} = \frac{\Delta A}{A} + \frac{\Delta B}{B}$</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>1 MSD - 1 VSD</p> Signup and view all the answers

<p>Total Reading = L.S.R + C.S.R</p> Signup and view all the answers

<p>To simplify numbers and maintain the same level of precision in calculations.</p> Signup and view all the answers

<p>Leading zeros are significant. (B)</p> Signup and view all the answers

<p>Length = L Time = T Mass = M Velocity = LT⁻¹ Force = MLT⁻² Energy = ML²T⁻²</p> Signup and view all the answers

Physical quantities that are independent of other quantities for their measurement.

Quantities that can be expressed based on fundamental quantities.

The number of digits that contribute to the precision of a measurement, including all non-zero digits and significant zeros.

The number of decimal places in the result of addition or subtraction is determined by the term with the fewest decimal places.

The number of significant figures in the result of multiplication or division matches the factor with the fewest significant figures.

Ensures that the dimensions of each term in an equation are consistent.

The expression of a physical quantity in terms of fundamental quantities, represented as powers.

A technique for checking the correctness of a formula, establishing relationships between quantities, and converting units.

The instrument with a movable jaw that slides along a main scale and a vernier scale, used for precise length measurements.

The smallest length that can be measured with a Vernier Calliper, determined by the difference between one main scale division and one vernier scale division.

An instrument using a micrometer screw with a linear scale and a circular scale, for measuring very small lengths.

The distance the screw gauge moves per full rotation of the circular scale.

The smallest distance that can be measured with a screw gauge, determined by the pitch and the number of divisions on the circular scale.

The difference between the measured value and the true value of a quantity.

The average of the absolute values of individual errors.

The ratio of the mean absolute error to the mean value of the measurement, expressed as a fraction.

The relative error expressed as a percentage, indicating the error proportion.

The combination of errors occurring in different measurements.

A numerical representation of the final result of a measurement, showing the measured value and its associated error.

The value obtained by repeating a measurement multiple times and averaging the results.

The process of adjusting a numerical value to a specific number of significant figures.

A system where length is measured in feet, mass in pounds, and time in seconds.

A system for measuring length in centimeters, mass in grams, and time in seconds.

A system where length is measured in meters, mass in kilograms, and time in seconds.

A technique used to check the correctness of a formula by examining the dimensions of each term.

A method for establishing relationships between quantities based on their dimensions.

A technique for converting the value of a quantity from one system of units to another.

Limitations of Dimensional Analysis

It can't predict the numerical value or constant in a relation.

It doesn't work with trigonometric, logarithmic, or exponential functions.

It doesn't provide information about constants or the nature (vector/scalar) of a quantity.