# Month: March 2018

## Electric current basics

Electric Current Current electricity or electric current consist of the movement of charges from one region of conductor to another. Therefore electric current is a movement of electron around the circuit.   Terms in  electric Electric current Resistance Potential difference (p.d) Cells Electric Circuit Resistivity Conductivity Resistor Insulator Ohm’s law Electric current : it defined …

## magnet and magnetism in physics

Magnet and Magnetism Magnet : it is substance that attract magnetic material.                                                  Magnetic material: it any substance that can be attracted by magnet. Examples are iron nickel, steel cobalt and some …

## 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 …