# C1 - Applied Science Department(ASD Centre for Foundation...

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FOSEE , MULTIMEDIA UNIVERSITY (436821-T) MELAKA CAMPUS, JALAN AYER KEROH LAMA, 75450 MELAKA, MALAYSIA. Tel 606 252 3594 Fax 606 231 8799 URL: http://fosee.mmu.edu.my/~asd/ PPH 0075 Physics I Foundation in Engineering ONLINE NOTES Chapter 1 Physical Quantities Applied Science Department (ASD) Centre for Foundation Studies and Extension Education (FOSEE)

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PPH0075 Physics I Chapter 1 __________________________________________________________________________________ ASD2007/08 1/ 16 Upon completion of this chapter, you should be able to: 1. distinguish standard units and system of units. 2. use common metric prefixes 3. explain the advantage of and apply dimensional analysis and unit analysis. 4. determine the number of significant figures in a numerical value and report the proper number of significant figures after performing simple calculation. 5. distinguish between scalars and vectors. 6. Add and subtract vectors a) graphically b) analytically Mind Map PHYSICAL QUANTITIES MEASUREMENT QUANTITIES units Derived Dimension analysis Instrument Accuracy & uncertainty Significant figures Scalar Vector SI unit
PPH0075 Physics I Chapter 1 __________________________________________________________________________________ ASD2007/08 2/ 16 1.1 SI UNITS Objects and phenomena are measured and described using standard units, a group of which makes up a system of units. The International System of Units (SI), or the metric system, has only seven (see table 1) base units. Table 1 : BASE UNITS QUANTITY SI UNITS SYMBOL Length meter m Mass kilogram kg Time second s Electric current ampere A Temperature kelvin K Luminous Intensity candela cd Amount of Substance Mole mol

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PPH0075 Physics I Chapter 1 __________________________________________________________________________________ ASD2007/08 3/ 16 1.2 DERIVED UNITS These units are derived from the base units. Combination of the base units. QUANTITY UNIT ABBREVIATION IN TERMS OF BASE UNITS Force Newton N kg ms - 2 Energy & Work Joule J kg.m 2 s - 2 Power Watt W kg.m 2 s - 3 Pressure Pascal Pa kg/(m.s 2 ) Electric Charge Coulomb C A.s Electric Potential Volt V kg.m 2 /(A.s 3 ) Electric Resistance Ohm Ω kg.m 2 /(A 2 .s 3 ) Capacitance Farad F A 2 .s 4 /(kg.m 2 ) Inductance Henry H kg.m 2 /(s 2 .A 2 ) Magnetic Flux
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C1 - Applied Science Department(ASD Centre for Foundation...

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