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(i) It has of continuously varying wavelengths in a exact wavelength range.
(ii) It is given by solids, liquids and highly compressed gases heated to high temperature.
(iii) E.g. Light from the sun, candle flame, filament of incandescent bulb etc.
how faster ultrsonic waves will travel in solids.
Voltmeter: An electromechanical instrument which is used to calculate potential difference among two points is known as voltmeter. Voltmeter is a modified form of a galvanom
A 40 kilogram girl climbs a vertical distance of 5 meters in twenty seconds at a constant velocity. How much work has the girl done? Ans: 2000 joules or 1960 joules work is
The integral in Ampere's Law is an integral. Answer: The integral is an integral along (over) a closed path (curve).
The fundamental particles: Although other atomic particles are known, the three fundamental ones are: Protons. The proton has unit mass and carries a unit positive charge.
a) The molar mass of air is 28.97 kg/kmol and the universal gas constant is 8.314 kJ/(kmolK). Show by calculation that the particular gas constant of air is around 0.287 kJ/(kgK)
FORCE AND NEWTON'S LAWS 1. Ancient view objects tend to stop if they are in motion; force is needed to keep something motion. This was a natural thing to believe in beca
Sol: The incident angle is 45 because the angle of reflection and angle of incident is equal.
At what temperature would the average speed of helium atoms equal (a)the escape speed from Earth, 1.12 ´ 10 4 m/s, and (b) the escape speed from the Moon, 2.37´ 10 3 m/s? (See Ch
experiments on how sound waves travel faster in iron
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