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Velocity:
It is common to find people confusing the terms velocity and speed when describing how fast an object is moving. The difference is that speed is a scalar quantity, whilst the term velocity refers to both speed and direction of an object. The full definition of velocity is that it is the rate at which its position changes, over time, and the direction of the change.
The simple diagram below shows how an aircraft, which flies the irregular path from 'A' to 'B' in an hour, (a speed of 350 mph), has an actual velocity of 200 mph in an East-Northeast direction.
Acceleration:
This term describes the rate at which velocity changes. If an object increases in speed, it has positive acceleration; if it decreases in speed, it has negative acceleration. A reference to Newton's Second law of Motion will explain the principles of acceleration. Acceleration can be in a straight line, which is referred to a linear acceleration and it can apply to rotating objects whose speed of rotation is increasing, (or decreasing), when it is called angular acceleration.
what is the difference between a supplementary unit and fundamental unit
Electromagnetism: If a straight wire carrying a current is formed into a circular loop, the magnetic field is as shown. The field may be deduced by taking elements of the
Echo: The sound heard after reflection from an obstacle is known as echo.
Circuits involving capacitive decay: Consider the circuit shown below. Depending on the time constant of the circuit, relative to the period of the square wave applied to it,
Biasing: The application of electric potential to semiconductor diode is known as Biasing.
The temp gradient is similar to finding the slope of a line (when in two dimensions) Temp. Gradient= Change in Temp. value/Distance. dT/dx = (T2 - T1)/(X2 - X1)
What is dispersion? Dispersion within optics consider as the change in phase velocity of an electromagnetic wave along with wavelength. Conversely, when there is a variation o
like parallel forsces
Q. What are the differences between fringes obtained in Newton's ring experiment and those produced by a bi-prism. Difference between Bi-Prism Fringes and Newton's rings
can a charge by any means, today, travel from a source to a sink wirelessly? Is there any technology to support it?
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