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In the study of motion, there are two quantities we should understand, these are the scalar and vector quantities. A scalar quantity is described by its magnitude only while a vector quantity has both magnitude and direction. Force, velocity, acceleration, displacement and electric field are vector quantities. Speed, distance, mass, volume, time density are some examples of scalar quantities.
Published by Jessie Agudo 40 months ago in Physics | +3 votes | 0 comments
Friction is a force that opposes the sliding or rolling of one body over another. It can work for us and against us. Without friction, you would slip and fall. Friction makes cars stop too. It exists in machines where a lot of moving parts against each other. Even in simple machines, there are always some friction. A pulley rubs on its axle, wheels rub against chains, belts and other wheels.
Published by Jessie Agudo 41 months ago in Physics | +2 votes | 0 comments
Consider a ball sliding down a very smooth, frictionless inclined plane. Due to a constant force action in the ball, it's velocity increases as it moves along the plane. The velocity of an object is continuously changing either in its magnitude or in its direction or in both. We defined acceleration as the time rate of change or velocity or Acceleration is equal to Change in Velocity divided by the Elapsed Time.
Published by Jessie Agudo 42 months ago in Physics | +0 votes | 0 comments
An object in motion is said to be accelerated when it's velocity increases in magnitude or direction or in both. Examples of accelerated motion are falling objects and ball rolling down an incline plane. The velocity of a body may be changed by changing the speed, the direction, or both speed and direction. If the direction of the acceleration is parallel to the direction of motion, only the speed changes; if the acceleration is at right angles to the direction of motion, only the direction chan...
Published by Jessie Agudo 42 months ago in Physics | +0 votes | 0 comments
Forces affect objects in many ways. These can be categorized into two: Change in shape and change in motion. In fact, forces cannot be seen but can only be inferred through the effects that they manifest. One of the most thrilling experiences you can get from riding a roller coaster is momentarily upside down, without falling out.
Published by Jessie Agudo 42 months ago in Physics | +0 votes | 0 comments
'Escape velocity’is a direct application of Newton’s third law as the force exerted by the body escaping from the earth generates a reaction. This force or velocity generated must be greater than the attracting force for an object to break free and enter space. It has now been calculated that a velocity of 7 miles per second is the minimum speed required to break free from the confines of the earth’s gravity; this is popularly referred to as ' Escape velocity' and works out...
Published by Madan Singh 50 months ago in Physics | +1 votes | 0 comments
Quantum harmonic oscillator has a great importance in physics because of its application in a wide variety of problems. In this article I have discussed how to quantize a harmonic oscillator and find its eigenstates and eigenenergies by the using the so called ladder operator prescription. Then the result is generalized to the case of multidimensional harmonic oscillator.
Published by roytanay 50 months ago in Physics | +5 votes | 0 comments
The analysis of current distribution in a circuit of normal conductors is done by help of Ohm’s law, Kirchhoff’s laws and other network theorems but trivial use of these laws in case of a resistanceless circuit lead to wrong results. For the case of normal conductors currents are mainly determined by the resistances but in a resistanceless circuit we need to consider self-inductances and mutual inductances also. This article describes the analysis of such non-trivial cases.
Published by roy 53 months ago in Physics | +3 votes | 0 comments
The Atomic bomb was first used on Japan and resulted in unconditional surrender. The A-Bomb is based on Einstein’s energy mass equation. It involves bombarding the heavy nuclei of an element like Uranium or Plutonium with neutrons. This sets off a chain reaction called fission resulting in a massive release of energy. It also releases gamma rays and neutron radiation called fallout.
Published by Madan Singh 53 months ago in Physics | +8 votes | 0 comments
In 1908 a mysterious blast took place in Tunguska, Siberia when a body from space exploded before it hit the earths crust. This resulted in a blast of the magnitude of 1000 A bombs dropped on Hiroshima. The incident has fired the imagination of scientists who have given varied theories for the explosion. Many have opined that the blast was caused by a alien spaceship while others have concluded it was a body from space.
Published by Madan Singh 54 months ago in Physics | +7 votes | 0 comments
A Geiger Counter is a device that is used to detect radiation. The device needs careful handling as it is a sensitive instrument. In addition anybody dealing with radiation must take precautions so that he or she does not come in contact with radiation or its source. The basic aim of the Geiger Counter is detect radiation by the ionizing effects radiation creates.
Published by Madan Singh 56 months ago in Physics | +5 votes | 2 comments
In the study of motion, there are two quantities we should understand, these are the scalar and vector quantities. A scalar quantity is described by its magnitude only while a vector quantity has both magnitude and direction. Force, velocity, acceleration, displacement, and electric field are vector quantities. Speed, distance, mass, volume, time, density are some examples of scalar quantities. The objective of the experiment is to determine the direction of the resultant force of a simple force...
Published by Jessie Agudo 56 months ago in Physics | +2 votes | 0 comments
The earliest sources of magnetism were magnets such as the famous loadstone of Magnesia. Many scientists began investigating the properties of magnetism associated with electric currents when they discovered that a compass needle is deflected by an electric current. One of the objective of this experiment is to differentiate magnetic induction from magnetism. Continue reading to know more.
Published by Jessie Agudo 56 months ago in Physics | +11 votes | 2 comments
Modern airliners have complex avionic systems. These need to be monitored for proper efficacy. This is done by Numerik Control systems called open and closed loops. These are important because of the power electronic on board. The open and closed loops systems help compare the operating parameters of the aircraft
Published by Madan Singh 56 months ago in Physics | +1 votes | 1 comments
This article will teach you some basic knowledge about quantum physics. Many different complex mathematical and scientific terms are used in this article. The article will teach you about Steven W. Hawking's research and ultimate goal in life. You will learn how the magnitude of his disease has limited him to a wheel chair.
Published by Robert Biermann 57 months ago in Physics | +0 votes | 0 comments
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