## electric charge and matter

The electric charge and the structure of matter The static electricity is defined as electric charge at rest. We can only describe the properties of this charges and their behavior. The interactions between electric charge at rest can be observed by considering a plastic rod and a piece of fur. If the rods are charged …

## Thermo-flask keeps warm water warm and cold water cold.

Why thermo-flask keeps warm water warm and cold water cold. The thermoflask is built by considering heat transfer and how substance gain and loose heat, which is by only Conduction, Convention and Radiation. Conduction: It is process by which heat energy is gain or loses by the passage of heat from one molecule or particle …

## Heat transfer by Conduction, Convention and Radiation

heat energy transfer Heat as one of forms of energy can be transferred from one point to another, through three ways. They are by conduction, convention and Radiation. Heat transfer by conduction: this is a process by which heat is passed along a metal object from one point to another. In this process heat is … ## The effect of heat on matter:Linear, cubic, and superficial expansion

The effect of heat energy on matter Thermal expansion of solid: Solid expands when heated and contract when cooled. The rate of expansion of solid depends on the type of material the solid is made of. For example the rate of expansion of brass is difference from that of iron etc Effect of expansion Rail way … ## The physics definition of heat energy

Heat energy as a form of energy Heat energy is a form of energy that makes us feel hot. Heat energy can also be defined as a form of energy which flows due to temperature difference. It is produced by sun, friction or fire. Heat can also be produced during chemical reactions Use of heat … ## what is power defined as in physics

What is power?  In physics power is defined as rate with which work is done. Power can be calculate in watts or in horse power if you are dealing with electrical power. power have difference equation use in calculation of it , depend on the parameters available just like equations of motion  and what you are … ## Equations of motion in physics

Parameters and equations of motion The parameters of motion in straight lines are: displacement, speed, or velocity, acceleration and time ALL the parameter is vector quantity except speed and time Displacement: it is the distance travel in specific direction Speed: Is the rate of change of distance with time. That is where v= speed S= … ## What is motion in physics?

The motion in physics   Moving away from introduction of physics, energy, work done, units and dimension and measurement, today we are going to study motion.  Motion: it the movement of a body from one place to another. The study of motion without involving the force that causes it is called Kinematic, while the study … ## what is work done in physics defined ?

work done in physics Outside physics, work has difference meaning, include even mental activities like reading, working in offices and many more. But in physics, work means only one thing. Work is said to be done when a force moves a body to a certain distance in direction of force. Work done is equal to … ## what is conversion and conservation of energy

what is conversion and conservation of energy In physics energy can be defined as the ability or capacity to do work. The unit of work and energy are the same which is Joule. Forms of energy (a). Kinetic energy:- this  is the energy in moving body. (b) Chemical energy: – energy in our food, motor … ## Fundamental and Derived quantities,units and dimensions

Fundamental and Derived quantities,units and dimensions Physical quantities have no meaning, unless is measured quantified and give a unit. Therefore we need number or quantity and unit of measurement to specify physical quantities. There two type of physical quantities, Fundamental and derived quantities. Among the fundamental quantities we have three most important, there LENGTH, MASS, … ## How to take Measurement of length, mass and volume

Measurement of length A length can something  be measured by using meter rule, caliper, venire caliper, and micro screw gauge. The instrument for measurement of length depends on how large or small the length is. If the length is very long like foot ball field, you use tape; a shorter distance like your reading table …

## The lists of famous physicists around the world today

The lists of Physicist, their country, their discovering and the of year of discovering Introduction to the study of physics NAME                                                                                               YEAR COUNTRY                                INVENTION William Gilbert 1544-1603 ENGLISH hypothesized that the Earth is a Giant magnet Galileo Galilei 1564-1642 Italian performed fundamental observations, experiments, and mathematical analyses in astronomy and physics; discovered mountains and … ## Physics ,branch and the importance of it

what is of physics Physics is the study of matter its mass and energy.  Physics Can also be simply defined and the study of matter and its physical properties. The importance of Physics Physics is very important as every product of technology was built with physics laws and principle. There nothing on built by scientists …