Hong kong diploma of secondary education examination. Unit conversion table chemical engineering faculty. She has taught science courses at the high school, college, and graduate levels. A 20 km long, 8 m wide, twolane highway is to be paved with a 4 cm thick layer of asphalt. Instructions the front of the flash card asks the user to recall an equation that links values e. In a way science is a key to the gates of heaven, and the same key opens the gates of hell, and we do not have any instructions as to which is which gate. This document will help students preparing for their 10th standard board exams. Unit conversion conversion of units unit conversion table. For example, you may measure the number of feet your toy car goes in three minutes and thus be able to calculate the speed of the car in feet per minute, but thats not a standard unit of measure, so you need to convert feet per minute to miles per hour, or meters per second. Grade 5 measurement worksheet convert between miles yards fine unit conversion worksheets that you must know, youre in good company if. Exercises exercises are problems for students to practice on their own. Description of units mechanical, electric, magnetic 4 iii. It will return failure if the unit is not defined and success if the unit is defined. For example, a swimmer may swim at the speed of 1 meter per second but he or.
Unit conversion problems the physics hypertextbook. Suppose you know that two different quantities are equal. The number of significant digits in a conversion factor may affect the conversion in some cases. List of data, formulae and relationships data molar gas constant r 8.
She has taught science courses at the high school, college, and graduate. Units and measurement class 11 notes physics chapter 2. In the calculation, the units you dont want meters cancel out. While you can find many standard conversion factors such as quarts to pints or tablespoons to fluid ounces, life and chemistry and physics classes will throw you curve balls. The measurement units that are involved to measure these physical quantities include meter, kilograms, pounds, ampere, seconds etc. Learn unit conversion physics with free interactive flashcards.
Units and measurement class 11 notes physics chapter 2 measurement the process of measurement is basically a comparison process. The concept of a quantity such as length is independent of the associated unit. Certain physical quantities have been chosen as fundamental or base quantities. Dimensional formula it is an expression which shows how and which of the fundamental units are required to represent the unit of physical quantity. Dimensions of esu and emu electric and magnetic quantities 5 v. A conversion factor is a quantity used to convert between one unit and another via multiplication or division. The unity bracket method of unit conversion 1 consists of a fraction in which the denominator is equal to the numerator, but they are in different units. Advanced placement physics 1 equations, effective 2015 constants and conversion factors proton mass, 1. Choose from 500 different sets of unit conversion physics flashcards on quizlet.
Other commonly used units from the united states customary system include the fluid volume units of the teaspoon, tablespoon, fluid ounce, us cup, pint, quart, and gallon, as well as the degrees fahrenheit used to measure temperature. Physics problems frequently ask you to convert between different units of measurement. The number thus obtained is known as the magnitude. Energy equivalents relevant unit k ev u e h 1 j 1 jk 1 j 1 jc2 1 j 7. Here l, t, and m denote, respectively, fundamental dimensions of length, time, and mass. Motion, force and energy topic 3, 4, 5 and 6 from as syllabus 1 average velocity r. We have unit conversion worksheets and the other about benderos printable math it free. Dimensional analysis the following are dimensions of various physical parameters that will be discussed later on in the year. Math algera, matrix, calculus, differential equation, simulation. Here, we have provided a few practice questions to help you better understand the concept.
Power power of ten prefix symbol of ten prefix symbol. Surface area and volume formulas are used to calculate the surface area and volume of the 3 d figure like cube,cuboid, pyramid, sphere. Algebraic, geometric and trigonometry formulas andor properties. Units of measurement physics class 11 download in pdf. Surface area is the area occupied by the surface of the 3d objects while volume is the space occupied by the object. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Students are advised to learn the formulas thoroughly to score good marks in important physics topics like thermodynamics, electric current, laws of motion, optics, energy conversion, etc. How to convert between measurement units in physics dummies. Dimensions and units for physical quantities mksq system 6,7 a. Thus, in addition to units, we need to know how to convert between them. Chooses appropriate units of measurement for area and volume and converts from one unit to another. The fundamental quantities that are chosen are length, mass, time, electric current. Important equations for as physics 9702 prepared by faisal jaffer, nov 2011 unit 2.
Surface area and volume formulas pdf physicscatalysts blog. To measure a physical quantity, we have to find out how many times a standard amount of that physical quantity is present in the quantity being measured. If you invoke units with thevoption, it will print the location of this file. Physics is a quantitative science, based on measurement of physical quantities.
Units and conversion factors table of contents section page references 3 i. Conversion of formulae and quantities between unit systems nikolai g. Unit symbol definition comments time second sec 1 s minute min 60 s hour hr 60 min hour hour 1 hr alternate symbol hour h 1 hr alternate symbol day day 24 hr shake shake 10 ns hertz hz 1 s1 length or distance international foot ft 0. Physics formulas for class 11 physics formulas list. Unit conversion weve already talked about the standard units of density kilograms per meter cubed, mass kilograms, and volume meters cubed. Length, mass, time, current, temperature are some of the physical quantities.
O p s is the displacement in meters and t is the time in seconds. These conversion tables are provided for your reference. A standard is a physical realization of the definition, with an agreedupon value to be used as a reference. Prefix used in code prefix for written unit multiplier da deka. A fleet of three dumptrucks is to be employed, each with an empty mass of 20 metric tons and a carrying capacity of 20 m 3. Aqa physics formula flashcard revision unit 2 teaching. For example, you may know that 1 inch is the same as 2.
The method for converting units comes right from one simple principle. A conversion factor changes the units of a measurement without changing its value. Temperature conversion formulas celsius, kelvin, and fahrenheit temperature conversions. Unit symbol dimension unit symbol dimension distance x. Included is a pdf guaranteed to print out correctly formatted and. Physics past exam questions measurement and units 1. Conversion charts and formulas metric system volume basic unit is stere s which is 1 cubic meter metric metric cubic cubic cubic unit meters inches feet yards miles unit steres inch foot yards millimeter mm. Recognises that the conversion factors for area of units are the squares of those for the corresponding linear units and for volume, units are the cubes of those for the corresponding linear units. A conversion factor is used to change the units of a measured quantity without changing its value. A conversion factor is a ratio that expresses how many of one unit are equal to another unit. Conversion of formulae and quantities between unit systems. Unit conversion is one of the topics that you need to master in order to do well in physics. The useful aspect of converting units or dimensional analysis is in doing nonstandard conversions. We write the units we have and then multiply them by the conversion factor so the units cancel out, as shown.
1397 246 781 723 296 1468 997 1327 1075 1506 817 824 1061 1062 325 328 1193 1373 1262 620 1316 79 312 19 366 941 1231 114 270