What evidence is there supporting the big bang theory?
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When a glass cylinder is filled with water and a piece of thick paper is placed at the mouth and the cylinder is inverted, the paper dies not fall. Why ?
What should a drummer do to make the sound of lower pitch?
Explain the applications of nmr spectroscopy?
Explain how the height of a mountain is approximately measured by means of thermometer readings ?
How can it be proved that the window glass id colored ?
How many images will be formed if the angle between two mirrors is 90o ?
Explain the Hard water?
Why is it easier to swim in sea water than in the river water?
assuming g = 9.8 m/sec2, what is the weight on earth, in newtons, of a 60 kilogram person?
What is centigrade thermometer ?
What is Fahrenheit thermometer ?
if 100W and 200W bulbs are connected in series to a supply which bulb will glow brighter and why