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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.
Vector Direction The significance of 'direction' could be seen in the dissimilarity among velocity and speed. In physics, speed is a pure scalar or something along with a magni
CO has same electrons as or the ion that is isoelectronic with CO is: (1) N + 2 (b) CN - (3) O + 2 (4) O - 2
what is measurement
To an order of magnitude, how many helium-filled toy balloons would be needed to lift you off the ground? Helium is an irreplaceable resource so make a theoretical solution rather
What do you mean by an optical fiber? State its principle. Can we minimize chromatic and spherical aberrations simultaneously? If so, how?
An approximate equation for the velocity distribution in a rectangular channel with turbulent flow is where umax is the velocity at the surface, y is the distance from the
Charging an Electroscope by Induction Using a Negatively Charged Balloon One general expression performed along with the electroscope includes the induction procedures of charg
Damped Simple Harmonic Motion Adding a damping force proportional to x to the equation of easy harmonic motion, the first derivative of x along with respect to time, the equati
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when told that a diffraction grating has 80 lines per mm we need to work out what 1 line would equal. I have the solution but i cannot figure out how they got 1 line to equal 1x10
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