Monday, September 28, 2015

Ch 11: Sound Waves 2

Doppler Effectthe apparent change in the pitch or frequency of a sound when there is relative motion between the source & the observer



Ch 11: Sound Wave 1

Application of Stationary (Standing) Waves

1. Stretched string

2. Air columns

Tuesday, September 1, 2015

Saturday, July 25, 2015

Wednesday, July 1, 2015

Forces 3

4. Object on an incline plane
4.1.     Object on incline plane experiences 3 forces: Normal force (N), gravitational force (W) and friction (f)

4.2 FBD
4.3 Transform
4.4 Forces in equilibrium
SFnett = 0  Ãž SFx = 0
Þ SFy = 0

Tuesday, June 30, 2015

Forces 2

3. Newton's Law

3.1 Newton's 1st Law is about object in equilibrium
- Object at rest will stay at rest, or continue to move with constant velocity in a straight line unless it is acted upon by an external force

Forces 1

1. Type of forces

2. FBD, example 1
- Below is a flying jet
- Label all the forces that act on it
- Draw FBD

Friday, June 19, 2015

Momentum & Impulse 2

3.2 Conservation of linear momentum
1. States
  • “In an isolated (closed) system, the total momentum of that system is constant.”
OR
  • When the net external force on a system is zero, the total momentum of that system is constant.”, Sp = constant,
OR
  •  The total of initial momentum = the total of final momentum
Spi = Spf
2. In 2-D Þ Spix = Spfx
                 Ãž Spiy = Spfy

3. Type of collission


# Use to determine either it's elastic or inelastic collision

Wednesday, June 17, 2015

Momentum & Impulse 1




3.1 Momentum & impulse
1.     Impulse, J = FDt
2.     Change in momentum: Dp = m (v2 – v1)
 3.     Impulse-Momentum Theorem
The impulse of the force F acting on a particle equals the change in the momentum of the particle caused by that force
J = FDt = m(v2 – v1)


Monday, June 1, 2015

Basic VS Derived quantities

Basic quantity

SI base unit
Base quantityNameSymbol
lengthmeterm
masskilogram      kg
timeseconds
electric currentampereA
thermodynamic temperature      kelvinK
amount of substancemolemol
luminous intensitycandelacd



Derived quantity - Combination of badic quantities

Other Units
velocity
meter per second, m/s
acceleration
meter per second squared, 
force
Newton, 
pressure
Pascal, 
energy
Joule, 
power
Watt, 


http://physics.nist.gov/cuu/Units/units.html




Sunday, May 31, 2015

SF016_Physics for Matriculation KPM

 Syllabus for SF016 2015/ 2016

1.       PHYSICAL QUANTITIES AND MEASUREMENTS (3 HOURS)
1.0    Physical Quantities & Units
1.1    Scalars & Vectors

2.       KINEMATICS OF LINEAR MOTION (5 HOURS)
2.1    Linear Motion
2.2    Uniformly Accelerated Motion
2.3    Free Falling Body
2.4    Projectile Motion

3.       MOMENTUM AND IMPULSE (2 HOURS)
3.1    Momentum & Impulse
3.2    Conservation of Linear Momentum

4.       FORCES (5 HOURS)
4.1    Basic of Forces & Free Body Diagram
4.2    Newton's Laws of Motion

5.       WORK, ENERGY AND POWER (3 HOURS)
5.1    Work
5.2    Energy & Conservation of Energy
5.3    Power & Mechanical Efficiency

6.       CIRCULAR MOTION (3 HOURS)
6.1    Uniform Circular Motion
6.2    Centripetal Force

7.       GRAVITATION (2 HOURS)
7.1    Gravitational Force & Field Strength
7.2    Gravitational Potential
7.3    Satellite Motion In a Circular Orbit

8.       ROTATION OF A RIGID BODY (8 HOURS)
8.1    Equilibrium of a Uniform Rigid Body
8.2    Equilibrium of a Uniform Rigid Body
8.3    Rotational Kinematics
8.4    Rotational Dynamics
8.5    Work And Energy of Rotational Motion
8.6    Conservation of Angular Momentum

9.       SIMPLE HARMONIC MOTION ( 5 HOURS)
9.1    Simple Harmonic Motion (SHM)
9.2    Kinematics of SHM
9.3    Kinematics of SHM
9.4    Graphs of  Simple Harmonic Motion
9.5    Period of SHM

10.   MECHANICAL WAVES ( 3 HOURS)
10.1   Properties of Waves
10.2   Superposition of Waves

11.   SOUND WAVE (4 HOURS)
11.1   Intensity & Beats
11.2   Applications of Stationary Waves
11.3   Doppler Effect

12.   DEFORMATION OF SOLIDS (2 HOURS)
12.1   Stress and Strain
12.2   Young’s modulus

13.   HEAT (2 HOURS)
13.1   Thermal Conduction
13.2   Thermal Expansion

14.   KINETIC THEORY OF GASSES (3 HOURS)
14.1   Ideal Gas equations
14.2   Kinetic Theory of Gasses
14.3    Molecular Kinetic Energy & Internal Energy

15.   THERMODYNAMICS (4 HOURS)
15.1   First Law Of Thermodynamics
15.2   Thermodynamic Processes
15.3   Thermodynamics Work