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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.
describe the factors which decide the broad area of scientific activity
a manufacturer of fasteners uses a four die nut former to produce blanks and the piercer punch began to break down using stainless steel bar stock. what change can be made so the m
Botany: In the Bronze and the Iron Ages, agriculture became the principal mode of production of man in all lands. It is, thus, not surprising that in India, botany and elementa
Explain the Adrenal Medulla The adrenal medulla secretes epinephrine or adrenaline and norepinephrine or noradrenaline. The secretory cells of the medulla are modified postgang
a. A 2 mm diameter parallel beam of photons each with energy of 100 keV is incident on a water phantom of thickness 15 cm. If the exit exposure is 2 mR (caused by primary photons),
What time period can carbon-14 dates have? Carbon 14 has a half-life of 5,730 years, and thus it can be used to date very precisely a large majority of things, particularly woo
HAZARDS IN THE LABORATORY : Laboratories in the biology department of schools, colleges and universities and other higher level organisation such as hospitals, veterinary esta
give examples for one energy transformed to another energy
Driving a boat by surface tension Secure some gum camphor at the drug shop. Cut two or three boats from stiff paper, every about 2.5 cm in length. Cut a notch in the stern larg
Explain the Transport properties of Loop of Henle The loop of Henle, as shown in Figure, has a descending limb and an ascending limb. As the filtrate moves down the loop of Hen
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