Electrical cars

Just for fun and information, there are some awesome Electrical Cars, check them out for motivation
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15 states that use the most energy.

We are only talking about the technical stuff but have you ever thought about those states who are using the most ENERGY. Well, this is a very creative and informative article based on gallery. Checkout the 15 states that use the most energy.
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Angular Velocity

Angular Velocity
The angular rate at which a rigid object is rotating. 

Definition:
 

• Every point on a rotating body has the same angular velocity even though every point does not have the same linear velocity. This is what makes the angular velocity a useful measure of the rate of rotation.

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Units:

SI: rad/s
Others Units: rev/s, rpm = rev/min, deg/se

Right Hand Rule

1. Point your index finger (and your middle finger) along the direction of motion of the charge v. For a current carrying wire this would be along the direction of positive current flow.
2. Rotate your middle finger away from your index finger by the angle q between v and B.
3. Pivot your wrist about the direction of v until your middle finger is pointing along the direction of the magnetic field B.
4. Hold your thumb perpendicular to the plane formed by both your index finger and middle finger.
5. Your thumb will then point in the direction of the force F if the charge q is positive. For q < 0, the direction of the force is opposite your thumb - alternately you could use your left hand for negative charges.

Centripetal Force and Acceleration

Centripetal Force and Acceleration:

Centripetal Acceleration:

• In order for an object to execute circular motion - even at a constant speed - the object must be accelerating towards the center of rotation. This acceleration is called the centripetal or radial acceleration and has a magnitude of

ac	= Centripetal acceleration	SI: m/s2
vT	= Tangential velocity or speed	SI: m/s
r	= Radius of object's path	SI: m
w	= Angular velocity	SI: rad/s

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Centripetal Force:

• The radial force needed to create this acceleration is call the centripetal force. It is directed towards the center of rotation and has a magnitude of

• For any object undergoing uniform circular motion, the net force towards the center of rotation must have a value equal the centripetal force.

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Centrifugal Force:

• In a frame of reference rotating with an angular velocity ω (omega), the object will be at rest, yet seem to experience a force acting upon it radially outwards equal to m ω²r. This is because a rotating frame is a non-inertial frame of reference, i.e. the frame does not move at a constant speed in a straight line, and consequently Newton's First Law does not apply.

• It is sometimes useful to move into a frame that is rotating with the system. In this rotating frame, the centripetal force is replaced with a force of the same magnitude acting outwards, which is called the centrifugal force. ("Centrifugal" means "fleeing from the center.") In solving a problem in the rotating frame, the centrifugal force can be treated as though it were another physical force acting on the object with a magnitude m ω²r (the same magnitude as the centripetal force) directed radially outwards. Most physicists would advise against doing this, because the centrifugal force is not a real force. I still find it useful in visualizing a problem.

Electromagnetism

Electromagnetism

This article is all about magnets and their properties, below are some topics that this article will cover

1)  Magnetic forces on moving charges.

So basically, the Earth is a natural magnet with magnetic poles near the north and south geographic poles.We can also consider the following statement :-

"A piece of iron (or an ore, alloy, or other material) that has its component atoms so ordered that the material exhibits properties of magnetism, such as attracting other iron-containing objects or aligning itself in an external magnetic field is called Magnet"

The SI units of magnetic field is the tesla [T].  Earth magnetic field is about 10-4 T . Powerful laboratories produce fields of 1 -2 T as a maximum .1 Gauss [G] = 10-4 Tesla [T]

 

 Magnetic force on a moving charge:-