name the physical properties

Forces at a distance Are equal and opposite. Depend upon the distance between the two objects. Depend upon the medium between the two objects for electrical and magnetic forces but not gravitational forces. Forces are described in different names. Some forces are shown in the f..

Static electricity was known to people more than 2500 years ago. The Greeks knew about the attractive property of the resin amber. They knew that by rubbing amber with cloth, it could be made to attract small feathers. The Greek name for amber was 'elektron..

Matter exists in several phases. If we look at all objects around us, we perceive that some materials have a definite shape and occupy a definite amount of space or volume. We call these materials solids and we can name many objects that are solids. We say that solids have a definite shap..

Static electricity was known to people more than 2500 years ago. The Greeks knew about the attractive property of the resin amber. They knew that by rubbing amber with cloth, it could be made to attract small feathers. The Greek name for amber was 'elektron'. After about a thous..

Physicists have categorized all forces occurring in nature under gravitational, electromagnetic, strong nuclear and weak nuclear forces. Both gravitational and electromagnetic forces can be expressed as inverse square laws. But nuclear forces cannot be expressed as a simple formula. They are basica..

Take a nichrome wire of about 50 cm length and apply a potential difference of 1.5 V from a battery. Measure the current flowing through the wire using an ammeter connected to it in series, and note the potential difference across the resistance using a voltmeter connected across it. Note down and ..

Introduction - Appliances used in our day to day life are based on the principles of electricity and magnetism. Electricity is one of the most important sources of energy. Lights, fans, motors, radios and television are some common appliances which work on electricity. Benjamin Franklin Historicall..

.e., a to and fro motion. A given point in the path is crossed by the body in opposite directions at regular intervals. This is called oscillatory motion. All oscillatory motions are periodic but not all periodic motions are oscillatory. On observing an oscillating system, like a loaded spring, one..

. Thermionic emission is the phenomenon by which free electrons from surface of a metal are emitted when heated to a high temperature. Example 2:- What are Cathode rays? Give three properties of these rays. Suggested Answer:- Cathode rays are a beam of electrons emitted from a hot cathode..

Directive property - When a bar magnet is suspended freely, it always comes to rest in a north-south direction. This property is used in the construction of a mariner's compas..