What is the value of magnetism at the center of earth?
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What is Refraction ?
What is the index of refraction of air?
What is Translucent body ?
Laser is an acronym for what?
explain Tides
What is fluorescence?
why sink condition occur in vivo.???
Explain what is the shadows?
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 does a tilted gyroscope not fall?
What is the Boiling ?
Why mercury rises in a barometer ?