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Floating in different liquids
Obtain a tall, slender glass jar, test tube or bottle, and the following liquids: mercury, carbon tetrachloride, water and kerosene. You will also require a small iron or steel ball such as a ball bearing, or iron nut or bolt; a small piece of ebony or some other wood that sinks in water; a piece of paraffin wax; and a piece of cork. First pour some mercury into the glass jar, then some carbon tetra- chloride, some water and some kerosene.
A simple equal-arm lever Make a wooden base 15 cm square and 2 cm thick. In the centre of the base fasten one more block of wood 4 cm square and 3 cm thick. Fasten to two sides
Explain Length-Tension Relationship The force of contraction of cardiac muscle is directly proportional to the initial length of the muscle fibers. This is known as the Starlin
Tuning in on the Stars: The fact that stars emit radiowaves was discovered accidentally in 1932 by a young engineer Karl Jansky. He was trying to find the source of noise
Ascorbic acid possesses following important physico-chemical properties: a) It is a white crystalline substance. b) It is freely soluble in water. c) Solution of th
To study the formation of a drop of liquid Gently pour aniline into a large beaker of cold water unless a layer about half an inch deep accumulates at the bottom. Place the bea
The Expanding Universe: Hubble's observations had proved the existence of galaxies. After mapping as many galaxies as could be seen by the telescopes then'available, he tu
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Explain the Complement System To remove a microorganism by phagocytosis requires phagocytes at the right place in the right time. The organism should adhere to the phagocyte. M
Which type of rock is critical for the formation of geysers? Liquid rock is required for geysers to type in the form of what is known as magma - which is the geological name fo
What Are the Constituents of the Intestinal Juice? Intestinal juice is also called succus entericus. The word succus means juice and entericus means intestinal. The digestive j
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