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    AM1102

    Physics

    Ms Nurulain Bte Samat

    Room S 216 / Ext:407

    [email protected]

    Consultation hours :

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    Objectives: At the satisfactory completion of this module the student

    will be able to give a general description of the followingsubjects using, as appropriate, typical examples andmathematical formulae in conjunction withy physicallaws. The student will also be able to read, understandand use sketches, drawings and schematics to describethe subjects.

    Subject Outline :

    Measurement

    Property of matter

    Mechanics Matter

    Mechanics Kinetics Mechanics dynamics

    Mechanics Fluid dynamics

    Thermodynamics

    Vibrations and sound

    Optics

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    Assessment : 50% Coursework 20% Test

    10% Quiz 10% Tutorials

    10% assignments

    50% Final Examination

    References : Haufe, M.(2006). Air Service Training Engineering Ltd.

    Perth college.

    Gaincoli, D.C. (2000) physics for scientists & engineers

    (3rd ed) New Jersey : Prentice Hall Mohamed, N.S., Supaat, L., Zainal. N., al et. (2003). Pre-

    University Physics Vol.1 Singapore : Thomson Learning.

    Lecture notes Physics (2010)

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    WEEK TOPIC

    1Measurement

    Properties Of Matter

    2 & 3 Mechanics Kinetics

    4 Mechanics - Static

    5 - 7 Mechanics : Dynamics

    8 & 9 Mechanics Fluid Dynamics

    10 & 11 Wave motion

    12 Optics

    13 & 14 Thermodynamics15 Revision week

    16 Examination

    17 Examination

    Course Outline

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    Introduction : Measurements

    In view of international nature of civil

    aviation industry, you will need to

    become fully conversant with metric,imperial and United states (US) units

    and measurements. This chapter will

    ask you to solve problems using SI

    units, and also consider variety ofEnglish/US units that you may not be

    familiar with.

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    Outline

    Unit & standard

    Base quantities Vs. derivedquantities

    Prefixes of unit

    Dimensional Analysis

    Conversion of SI units

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    1.1 Units & Standard

    Units are used to describe physical quantity

    Physical quantity : quantity that can be

    measured

    In engineering, it is essential to include a unit in

    any measurement or calculation. Otherwise a

    number is meaningless (unless it is a ratio).

    System International (S.I) is originated byFrench. It is the most important standard of

    measurement nowadays.

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    1.2 Base quantities & derived

    quantities Base quantities:

    most basic quantities

    Cannot be defined in terms of other physical quantity There are 7 base quantity

    Derived quantities

    are all other quantities which can defined in terms of the

    seven base quantities

    e.g. area: m2, velocity: m/s, force: kg.m/s2

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    7 Base quantity and its SI unit

    fundamental unit SI symbol

    mass kg m

    length m l

    time s t

    temperature K T

    amount of substance mol mol

    luminous intensity cd -

    electrical current A -

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    1.3 Dimensional Analysis

    Used to prove derived quantities

    Quantities that make up from more than 1 base

    quantities will have the combination of units ofthose base quantity units.

    Most of the quantities derived from base

    quantities length [L], mass [M], time [T].

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    e.g: Area = length x width = [L] x [L] = [L2

    ];unit: m x m = m2

    Force = mass x acceleration

    = [M] x [L]/[T2];unit: kg x m / s2 = kgms-2

    Example 1.1

    Find the dimension & unit of pressure.

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    1.4 Prefixes of Unit

    To make numbers moremanageable, we often add

    prefixes to units. The tablebelow shows common unit

    prefixes and their multiplyingfactors:

    Example 1.2

    3,560,000,000m = 3.56Gm

    or 3.56 x 109

    m 0.000000140s = 0.14s

    or 1.4 x 10-7 s

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    1.5Conversionsbetween

    SystemsofUnits Sometimes, it is necessary to convert

    one system of units to another.

    This is done using the conversionfactors.

    1 mile = 1 609 m = 1.609 km

    1 m = 39.37 in

    1 ft = 0.304 8 m = 30.48 cm

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    This has led to several different

    measurement systems including theSI system,

    the fps (foot-pound-second) system and

    the cgs (centimetre-gram-second)system.

    In engineering in general and in the

    aircraft industry in particular,

    measurements are often stated in non-SI

    units

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    Some conversion factors between SI and fps units

    are given below:

    Quantity fps Unit SI UnitLength 1 inch = 2.54 x 10-2 m

    Area 1 yard 2 = 0.83613 m2

    Volume 1 gallon (imperial) = 4.5461 x 10-3 m3

    Speed 1 mile/hour (mph) = 0.44704 ms-1

    Mass 1 pound (lb) = 0.45359 kg

    Force 1 lbf (pound force) = 4.4482 N

    Pressure 1 lb in2 (psi) = 6.8948 x 103 Pa

    Energy 1 ft lbf (foot pound force) = 1.3558 J

    Power 1 hp (horse power) = 745.70 W

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    Example 1.3

    A silicon chip has an area of 1.25 square inches.Express this in square centimeters. ( 1 inch =

    2.5cm)

    Example 1.4What is the posted speed limit of 55 miles per

    hour (mi/h or mph) in ( 1 mi = 1.6km)

    (a) in kilometers per hour (km/h)?

    (b) meters per second (m/s) and

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    . a) Convert the following quantity

    i. 100hour = ________________ s

    ii. 250 km/hr = ________________ m/s

    b) Represent the following quantity using

    suitable prefix

    i. 0.00000987meter =

    ii. 821000000000seconds =

    Exercise

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    c) Determine if the following is a base or a

    derived quantity. If it is a derived quantity,use dimensional analysis to prove it.

    i. Acceleration (ms-2)

    ii. Force ( N or kgms-2)

    iii. Mass (kg)