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Floating a needle on water
Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are careful the needle will float as you take the fork away. Look at the water surface closely. Can you see how the surface film seems to curve under the weight of the needle ?
similarity between granite and rhyolite
What are the three major types of rocks? Ans) The three kinds of rocks are as follows: 1) Igneous rock (from volcanoes etc) 2) Sedimentary rock (Dead Sea creatures, time
what is the solution of the water polution
Neptune The eigth planet, Neptune, was discoveted in 1846 by astronomer Johann Gottfried Galle. We have already told you the story of its discovery in last. It is so f
what is force?
A look at Microwave Processing The first thing which comes to our mind while on the topic of microwave processing is what microwaves are? Microwaves are basically electromagne
Support groups are separate from clinical therapy groups. Why is it important for substance use disorders counselors to know what happens in non-clinical support groups? How could
Q. How is harvest maturity identified? Maturity indices can be determined on the basis of : Number of days from setting, Sight-colour, size and shape, Touch-texture, hardness o
What is the difference among a canyon, gorge, and valley? The easiest way to answer this is to describe each term, so you can see: 1) A canyon is a deep valley with steep si
Floating a razor blade Secure a used razor blade of the double edge type. Try floating it on the surface of water. Again watch the surface and see if the surface film dips unde
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