VISCOSITY
MEANING OF VISCOSITY Viscosity is the internal friction which exists between layers of the molecules of a fluid (liquid or gas) in motion. The viscosity of a fluid can also… Read More »VISCOSITY
Physics
WORK, ENERGY AND POWER
WORK Work is said to be done whenever a force moves a body through a certain distance in the direction of force. Work done can be defined mathematically as the… Read More »WORK, ENERGY AND POWER
PRESSURE, ARCHIMEDES’ PRINCIPLES, UPTHRUST & LAWS OF FLOATATION
PRESSURE Pressure is defined as the perpendicular force per unit area acting on a surface. It is a scalar quantity & measured in N/m2 or Pascal (pa).It can also be… Read More »PRESSURE, ARCHIMEDES’ PRINCIPLES, UPTHRUST & LAWS OF FLOATATION
DENSITY & RELATIVE DENSITY
DEFINITION OF DENSITY The density of a substance is the mass per unit volume of the substance. Density = mass of a given substance Volume of the substance Density is… Read More »DENSITY & RELATIVE DENSITY
VECTOR & SCALAR QUANTITY, DISTANCE/DISPLACEMENT
VECTOR & SCALAR QUANTITY, DISTANCE/DISPLACEMENT, SPEED/VELOCITY, ACCELERATION, DISTANCE/DISPLACEMENT –TIME GRAPH, SPEED/VELOCITY–TIME GRAPH SCALAR & VECTOR QUANTITY A scalar quantity is defined as a quantity that has magnitude only but no… Read More »VECTOR & SCALAR QUANTITY, DISTANCE/DISPLACEMENT
FRICTION
DEFINITION OF FRICTION Friction (Fr) is defined as a force which acts at the surface of separation between two objects or two bodies in contact and tend to oppose the… Read More »FRICTION
MOTION IN NATURE
FUNDAMENTALS OF MOTION Many scientists have studied motion and its properties because of its importance to life. The Italian, Galileo Galilei, who lived from 1564 to 1642, did the first… Read More »MOTION IN NATURE
MEASUREMENT OF MASS, WEIGHT, LENGTH & TIME
TECHNIQUES AND MEASUREMENT Measurement is an important aspect of physics or other sciences. No fact in science is accepted, no law is established, unless it can be exactly measured and… Read More »MEASUREMENT OF MASS, WEIGHT, LENGTH & TIME
INTRODUCTION TO PHYSICS
MEANING OF PHYSICS Physics is the scientific study of matter and energy and how they interact with each other. This energy can take the form of motion, light, electricity, radiation,… Read More »INTRODUCTION TO PHYSICS
MACHINES
Machines make our work simpler. It is a force producing device by which a large force called load can be overcome by a small applied force called effort Terminologies Used… Read More »MACHINES
SIMPLE HARMONIC MOTION
This is the periodic motion of a body or particle along a straight line such that the acceleration of the body is directed towards a fixed point . A particle… Read More »SIMPLE HARMONIC MOTION
EQUILIBRIUM OF FORCES
CONDITIONS FOR EQUILIBRIUM A body is said to be in equilibrium if under the action of several forces, it does accelerate or rotate. The sum of the upward forces… Read More »EQUILIBRIUM OF FORCES
NEWTON’S LAW OF MOTION
NEWTON’S LAWS OF MOTION Newton’s first law of motion states that everybody continues in its state of rest or of uniform motion in straight line unless it is acted upon… Read More »NEWTON’S LAW OF MOTION
PROJECTILES AND ITS APPLICATION
MEANING OF PROJECTILE A projectile motion is one that follows a curved or parabolic path .It is due to two independent motions at right angle to each other .These motions… Read More »PROJECTILES AND ITS APPLICATION
DERIVATION OF EQUATONS OF LINEAR MOTION
BASIC DEFINITIONS Displacement: This is the distance traveled in a specified direction. It is a vector quantity. Its unit is metres Distance: This is the space or separation between two… Read More »DERIVATION OF EQUATONS OF LINEAR MOTION
SCALAR AND VECTOR QUANTITIES
CONCEPT OF SCALAR AND VECTOR QUANTITIES Physical quantities are divided into scalar and vector quantities. A scalar is one which has only magnitude (size) e.g. distance, speed, temperature, volume, work,… Read More »SCALAR AND VECTOR QUANTITIES
POSITION, DISTANCE AND DISPLACEMENT
POSITION The position of an object in space or on a plane is the point at which the object can be located with reference to a given point (the origin).… Read More »POSITION, DISTANCE AND DISPLACEMENT
ELECTROMAGNETIC FIELD II
ELECTROMAGNETIC FIELD This is a field representing the joint interaction of electric and magnetic forces. It is exerted on charged particles. The force on a charge q moving with velocity… Read More »ELECTROMAGNETIC FIELD II
ELECTROMAGNETIC FIELD
PATTERNS OF MAGNETIC FIELDS Magnetic field pattern can easily be observed using iron fillings. The magnetic is put on paper and the iron fillings are sprinkled lightly on the paper… Read More »ELECTROMAGNETIC FIELD
MAGNETIC FIELD
MAGNET AND ITS PROPERTIES A magnet is any material that is capable of attracting other pieces of the same material as well as pieces of iron. A substance is said… Read More »MAGNETIC FIELD