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According to their frequencies, waves are separated into three categories:
(1) Audible or sound waves : Range 20 Hz to 20 KHz. These are formed by vibrating bodies like as vocal cords, membrane or stretched strings.
(2) Infrasonic waves : Frequency lie below 20 Hz.
Example : waves formed during earth quake, ocean waves etc.
(3) Ultrasonic waves : Frequency greater than 20 KHz. Human ear cannot listen these rays, certain creatures such as dog, bat and mosquito show result to these.
Th e fixed value resistors are those whose resistance are fixed and cannot be changed. The fixed resistors can be further subdivided into following categories. (a)
Any thermodynamic procedure which takes place in a system without the exchange of heat with the surroundings.
At the neutral position, magnetic field because of the bar magnet is just equal and opposite to the horizontal component of earth's magnetic field.
Explain Shape of the earth? Shape and size of the earth. The shape of the earth is regarded as a sphere, but it is mainly an oblate spheroid like as egg being slightly flatter
Explain Transmitters and Receivers Your radio is able to give you the news or play music because it can receive signals that are transmitted by radio stations. Radio waves are el
The topic for the project is Newton's Law of Cooling, although you may choose a different title. The aim is to research how the temperature of a hot object is lost when it is kept
Car travelling 60 km per hour Overtakes another car travelling at 42km per hour. Asuming each car to be 5metre long . Find totoal time taken during the Overtake. and road distance.
The input piston of a hydraulic jack has cross sectiona
#question.An experminet to prove that a substance is ferrmoanetic
FARADAYS LAW: When the magnetic flux through the coil is made to vary, an emf is induced in the coil. The magnitude of the induced emf is proportional to the rate of change of
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