Physics

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. It is made of soft iron since it has the property of losing its magnetism very quickly. The soft iron core of the electromagnet makes the magnetic field stronger.

The power source such as a Battery of an IED creates an electrical charge. An Improvised Explosive Device (IED) is a bomb constructed and deployed in ways other than in conventional military action.

When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as beats.

If an object is dropped from a height and there is no air resistance its speed will increase.

Stephen Hawking is the writer of the book ‘A Brief History of Time’.

Newton’s first law of motion is sometimes referred to as the law of inertia. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Tesla is a unit of magnetic field.

Barometer is instrument which is used to measure to pressure. A slow downfall of reading suggests a low pressure area is passing in a nearby region, it may rain. If the reading is going down very fast then its an indication of storm (within 5-6 hours).

The pressure of a fluid varies with depth h as P = PQ+pgh, where p is the fluid density. This expression is associated with Pascal’s law.

God Particle is Higgs Boson.