Engineering Physics Fundamentals: Definitions and Measuring Standards, Slides of Engineering Physics

Definitions and measuring standards for various physical quantities such as time, length, mass, space, force, particle, rigid body, density, position, distance, velocity, acceleration, length (yard, foot, meter), measuring standards (platinum iridium bar, krypton-86 lamp, ipk, second, atomic clock), and references (fundamentals of physics by halliday and resnick, wikipedia encyclopedia).

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2011/2012

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2/3/2011
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GE GE 14021402
Engineering PhysicsEngineering Physics
First Semester (Engineering)First Semester (Engineering)
Spring Spring 20112011
Fundamentals Fundamentals
CH CH 11
GE GE 1402 1402 EPEP
Engr. Humera Rafique
Assistant Professor (Electronics)
Office: Electronic Engineering Faculty Room (C6)
College of Engineering
web: http://sites.google.com/site/kietcoeee/home/fall2010-ep
course folder: \\paf3\Humera Rafique\Spring2011\EP
،تا03 ،رو2011 22
Fundamentals Fundamentals
CH CH 11
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GEGE 1402 1402

Engineering PhysicsEngineering Physics

First Semester (Engineering)First Semester (Engineering)

SpringSpring 2011 2011

FundamentalsFundamentals

CHCH 1 1

GEGE 14021402 EPEP

Engr. Humera Rafique

Assistant Professor (Electronics)

[email protected]

Office: Electronic Engineering Faculty Room (C6)

College of Engineering

web: http://sites.google.com/site/kietcoeee/home/fall2010-ep course folder: \paf3\Humera Rafique\Spring2011\EP

2011 ، ور 03 ،ات 22

FundamentalsFundamentals

CHCH 1 1

Course OutlineCourse Outline

1. Fundamentals

2. Mechanics

a. Statics b. Dynamics

3. Fluid Mechanics

4. Thermodynamics

5. Solid State Physics

6. Optics

FundamentalsFundamentals

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FundamentalsFundamentals

ofof

EnggEngg. Physics. Physics

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Definitions

TIME:
  • The measured or measurable period during which an action, process, or condition exists or continues

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Definitions

LENGTH:
  • The longest dimension of an object

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Definitions

MASS:
  • Measure of inertia of a body i.e., its resistance to a change of its velocity or, quantity of a matter in a body

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Definitions

SPACE:
  • Geometric region occupied by bodies whose positions are described by linear & angular measurements related to coordinate systems of 2D or 3D

FORCE:

  • action of one body on another
  • tends to move a body in the direction of its application
  • action of force depends on:  Magnitude  Direction of action  Point of application

} vector

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Definitions

DENSITY:
  • Amount of mass contained in a unit volume

e.g.,  Al: 2.7 g/cm^3  Lead: 11.3 g/cm^3

m V

ρ =

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Definitions

POSITION:
  • location of a body (particle) w.r.t its reference position, say (0,0)

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Definitions

DISTANCE:
  • length of a path followed by a particle
DISPLACEMENT:
  • Distance , with direction

scalar

vector

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Definitions

VELOCITY:
  • distance covered in a unit time interval
ACCELERATION:
  • change in velocity in a unit time interval

FundamentalsFundamentals

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Measuring Standards

MASS:
  • Kg: mass of a specific iridium alloy cylinder kept at IBWM at Sevres France
  • Established since 1887
  • 1 Kg = IPK = Mass of 1 Lit of water

Ref. http://museum.mist.gov

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Measuring Standards

TIME:
  • 1960: second =
  • 1967: characteristic frequency of a particular Cesium atom as ref. clock second: 9 192 631 770 time the period of vibration of radiation from the Cesium-133 atom
  • Leap seconds to synchronize normal clocks with the standard clock
  • i.e., Atomic clock

1 1 1 60 60 24 of a mean solar day

          

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References

1. Fundamentals of Physics (H & R)

2. Wikipedia encyclopedia

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