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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.
Newtons Law of Inertia Car and The Wall As per to Newton's first law, an object within motion continues in motion along with the similar speed and in the similar direction unle
theory
How do you magnetize metal? You can rub a magnet with the metal in single direction for a bunch of times (the more the better), and that will magnetize it to some degree, but i
Although it needs not concern us further, we also consider that the flow is irrotational. To check for this property, let a tiny grain of dust goes with the fluid. Although this te
Is the sheath color important? This is a mainly slippery subject and the cause of heated debate. Several scientists affirm that an opaque light or white colored cladding, parti
Advantages of high transmission voltage A) Decreases volume of conductor material: B) Enhance in transmission efficiency C) Reduces percentages line drop
If either screen or source or both are at preset distance from the diffracting device (obstacle or aperture), the diffraction is known as Fresnel type.
Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential in the hollow conducting shell is found to be:
One source of a star's energy is the fusion of two deuterons to form an alpha particle plus a gamma ray. a. Write down the nuclear equation for this fusion. b. Measure the m
The electric field E because of a point charge at any point near it is explained as where q is the test charge and F is the force acting on it. What is the physical significance of
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