What is the commercial unit of electric power
Swimmers are provided with an inflated rubber jacket . why?
How much does two pints of water weigh when frozen?
Explain the Radiation ?
State Laws Of Conservation Of Energy?
What is Force ?
Explain about Electron microscope?
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 solar collection has been installed to heat water. A large water tank has a volume of 5.0 x 105 cm3. The area of the solar collectors is 8m2. (2 meters by 3 meters). If the water in the tank starts out with a temperature of 30°C in the morning, what is its temperature in the evening after the sun has set?
Why dies a boat-man push the bank with an oar, when he wants to clear his boat off the bank?
What is the effect of using two converging lenses in one optical instrument?
What is Amphoteric ?
What is fluorescence?