What is the law of machines?
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to find the temperature of the sun, the following law is used 1. Charles'law, 2. Stefan's fourth power law of radiation, 3. Boyle's law, 4. Kirchhoff's law
a ball of mass 500g moving with a velocity of 10m/s collides with another ball of mass 250g.after the impact,the second ball moved off with a velocity of 8m/s calculate the final velocity of the first ball.
Name the element which has the simplest absorption spectrum?
Explain the Phosphorescence ?
What is the life of permanent magnet and what type of magnet is used in speakers?
The element required for solar energy conservation___?
What are isotopes?
Explain the Types of Refrigeration ?
All elements with an atomic number greater than what number are unstable?
we know when two atom combine,the electrions are in valance band,but in case of semiconductor doner or acceptor level are above of v.. whyb
Why is the height of mercury column affected by a tube having a very narrow bore ?
Explain real image?