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RAGGING-CAN BE GIVEN A MORE POSITIVE DIRECTION
posted on 02 May 2009
by:anshu chaudhry
PARENTS MUST HAVE REALISTIC EXPECTIONS
posted on 02 May 2009
by:anshu chaudhry
SOCIALISATION -THE FOUNDATION 0F HUMAN LIFE
posted on 29 Apr 2009
by:lalit kumar
CBSE Multimedia Animated CD DVD : Free Delivery Dial 01164614067
posted on 28 Mar 2009
by:TopRank India
JUST PASS IT ON..........
posted on 24 Mar 2009
by:anshu chaudhry
SHARING-THE BEST WAY TO GO!
posted on 24 Mar 2009
by:anshu chaudhry
OBESITY ON THE RISE IN CHILDREN
posted on 24 Mar 2009
by:anshu chaudhry
INSTILL HEALTHY EATING HABITS IN YOUR CHILDREN
posted on 24 Mar 2009
by:anshu chaudhry
Schoolsonweb
posted on 20 Feb 2009
by:Poo
DEALING WITH MOOD SWINGS!!!:-(
posted on 15 Feb 2009
by:priyannkaa dey
 
Featured Experiments
1 Center of Gravity inside the surface area of the object on the ground
Drag the center of the block to make the block tilt with an angle.
As long as the center of gravity stay inside the surface area of the object on the ground,
the block will not fall out.  Because the torque will always turn it back.
However, if the center of gravity was outside the surface area, the block will fall out.!
You can also change width or height of the block with slider bars.
2 BUOYANCY PARADOX - BALL IN TWO LIQUIDS
An object with density d2 is floating on a liquid with density d1. (d1>d2)
You can drag h3 to add another liquid with density d3 to find out what will happened to the object d2.
You can change density for d1,d2,d3 and height for those two liquid.
Click show P to find out how the pressure changed.
3 Hydrogen Bonding
Check the hydrogen bonding between water molecules
4 Boiling & Freezing Point
Here you will learn about boiling-point elevation and freezing-point depression
5 A super-conducting loop moving across a uniform magnetic field region
A super-conducting loop (current I=0 initially) moving out of a uniform magnetic field region.
What will happened when it move out the region (magnetic fields in the loop will reduced)!
Initially, the loop is assume to be a super-conductor.
Find out what will happen (the loop act as an inductor), then add some resistor to the loop and see the change. Think about the physics related to this simulation!

The green circles represent the charged particle in the loop. (it will move when there is induced current).
Red arrow is the velocity of the conductor.
6 Boyle's Law
7 Molarity of Solution
Determination  of  Molarity of an Acid or Basic solution
8 Traffic Control System
Would you like to engineer the traffic light system for a one-way street that consists of several lanes along which rush-hour traffic flows?

How would you time the onset of green lights at the various intersection?
How to promote the traffic flow? This experiment lets you play with it.

You can click the +/- sign to change the time delay between traffic lights.

How to use this experiment

  1. The traffic lights at interactions are for cars moving from left to right. The traffic on the perpendicular streets can only move when light is RED.

  2. You can change the period of each light

    1. Clicking the traffic light at the top-left corner
    2. The number near each color is the period for that particular light (second)
    3. Left/Right mouse click will decrease/increase one second
    4. ( for MAC user, click between light and number to the right to increase the length of time)

  3. Parameter controls: Each click to the arrow at left/right of the number will decrease/increase
    the parameter by 1 unit.

    1. Delay time control: near the traffic light controls the delay of the onset of green light at the interaction relative to that at previous intersection.
    2. Max Velocity control: represents the speed limit  ¡]Vmin=5, Vmax= 50¡^
    3. Acceleration control: represents the acceleration for the car when it speeds up. ¡]Amin=1 , Amax=20¡^

  4. Text Field values

    1. T¡G time in second after pressing the start button
    2. N1/N2/flow rate¡G total number of cars passes intersection (N1:left-right/N2:up-down)
      flow rate=(N1+N2/3.)/T
    3. n1/n2/flow rate¡G number of cars passes intersection during last minute.
      flow rate=(n1+n2/3.)/60


  5. Color code for car
    1. yellow: accelerating (A>0.)
    2. green: moving with constant speed (include stopped) A=0.
    3. red: stopping (A<0.)


  6. Velocity of each car is represented by a blue dot.

  7. A new function has been added to help you determine the delay time between traffic lights.
    Click the right mouse button to suspend (the animation).
    The time intervals (for the first car ) during which the signals are green/yellow/red
      are represented by thin (colored)lines at one side of the road.

  8. A blue curve represent x-t (displacement verse time) for the first car is shown.
    Use that curve with those color intervals to adjust the delay time between
    traffic lights. Click the right mouse button again to resume.

Observation:

  1. Suppose a platoon is stopped at interaction. When the green light comes on, there is a "start-up wave" travels from the leader along the length of the platoon at a speed vs.
  2. How to adjust parameters to increase the traffic flow?
    1. adjust timing of each light
    2. adjust delay time control
    3. adjust Vmax
    4. adjust A(acceleration)
9 Particulate nature of matter
Find out about the view of a metal at different temperatures
10 pH Measurements: Salts & Buffers

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