Explain the difference between isolation transformers and step up or step down transformer?
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Explain what is meant by 4th dimension?
Explain about Ultraviolet rays?
What is Caustic soda ?
Explain why does sun appear flat during sunrise and sunset?
Why in cold countries, the water at the surface freezes and in the inner portion it is in the sate of water ?
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?
The principle of action of points is used in ___________.
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Define Bulk modulus ?
Explain the Vapour pressure ?
What is the dramatic increase in amplitude called when the frequency of forced vibrations on a body matches the bodys natural vibration frequency?
What is sound velocity?
Explain about Anemometer?