SS 3 Physics

Energy Energy is defined as the ability to do work. It exists in different forms like: heat, light, sound, electrical, potentials (stored), kinetic etc.   Laws of Conservation of Energy Energy can be changed from one form to another. The total amount of energy before and after the change remains the same. This observation is […]

Definition of Reaction Rate The rate of a chemical reaction is defined as the quantity of reactants converted or products formed per unit time. Typically, it is determined experimentally by measuring the change in concentration of one of the reaction components over time.   Methods of Measuring Reaction Rate Various properties can change with time

It is Nigerian communications satellite. It is also called NIGCOM-SAT 1. It was launched in May, 2007 by along March 3-B rocket in China. FEATURES OF NICOM-SAT 1 It is a superb hybrid geostationary satellite with a launch mass of 5150kg, a service life of at least 15 years and a reliability of more than

Nigeria made its debut in satellite space technology on September 27, 2003 when it launched Sat-1 aboard a Russian rocket. The Niger-sat1 carries an imaging payload that provides satellite images of 32m resolution with a swath width of 600km using push broom scanning in three spectral bands (Red, Green and Near infra-red) and 3-5 days

A rocket or rocket vehicle is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. A satellite is an object that goes around or orbits a larger object such as a planet. While there are natural satellites like the moon, hundreds of man-made satellites also orbit the earth. In all

A dam is a barrier constructed across a stream or river to impound water and raise its level for various purposes such as generating electricity, irrigation and water supply systems, increase river depths for navigational purposes, to control water flow during times of flood and drought, create artificial lakes for fisheries and recreational use. In

A machine is a device that aids man in the performance of work and makes the work easier, quicker and more convenient. Machines use energy to multiply a force, change the direction of a force, transform or transfer energy or multiply speed. Machines play a pivotal role in modern society by enhancing human capabilities, streamlining

Transformer And Power Transmission A transformer is an electrical device for changing the size of an a.c. voltage. It acts to increase or decrease the em.f of an alternating current. It consists of two separate sets of coil, the primary coil and the secondary coil. The primary coil is the input winding of turns of

Electromagnetic Field Fleming left hand rule Application – D.C Motors, moving coil galvanometer. Electromagnetic field: This is a field representing the joint interaction of electric and magnetic forces. It is exerted on a charged particles. The force on a charge q moving with a velocity v (less than the velocity of light is given by

Electrolysis Definition of Simple Terms Electrolysis This Is the process whereby a liquid conducts electricity by the movement of positive and negative ions within the liquid while undergoing chemical changes. Electrolytes These are liquid, which allows the electricity through them is called electrolytes. Such electricity is salt solutions, alkalis and dilute acids (acidulated water). Non-Electrolytes

Electric Circuit Electric current is simply an electric charge in motion. In conductors such as cables or wire, the current consists of a swam of moving electron. Electric cells are chemical devices, which are capable of causing an electric current to flow.   This produces electric force, which pushes the current along. If there is

Satellites And Their Functions The word satellite refers to a body orbiting a larger one. There are natural satellites (e.g the Earth and other planets orbiting the Sun), and artificial satellites such as; Communication Satellites (that transmit telecommunication signals), Global Positioning Satellites (that allow for the identification of locations on the Earth) and Meteorological Satellites

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Experiments with discharge tube show that gases conduct electricity under low pressure and high potential difference. At very low pressure and high voltage, the gas in the discharge tube breaks into ions. The positive ions move towards the cathode, the negative ions and free electrons move towards the anode.

Photoelectric emissions is used in the following :
I Burglary alarm
ii Television camera
iii Automatic devices for switching light at dusk e. street light.
iv. Sound production of film track
v. industrial controls and counting operations