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Making a jam jar aquarium
If a large glass tank is not available, practically any glass vessel can be used as a easy aquarium if it is well stocked with submerged water plants like as Elodea or Myriophyllum, to aerate the water. A 1 kg jam jar is fairly suitable for keeping caddis larvae, pond snails, small crustacean and plants like as Elodea and Lemna minor, and will keep in properly balanced condition for months if carefully stocked. It is as bad to under stock as it is to overstock.
A magnetizing force of 8000A/m is applied to a circular magnetic circuit of mean diameter 30cm by passing a current by a coil wound on the circuit. If the coil is uniformly wo
Intensities of an ordinary light and laser light The intensity (I) of a wave is the energy per unit time flowing through a unit normal area. The light from an ordinary light so
how to solve vector quantity, with solutions and drawing
What is Gravity Gravity is a force which holds you in your seat. If I pull the chair out from under you, what will take place? Ouch! Gravity fast pulls you down to the floor. I
Eotvos law of capillarity (Baron L. von Eotvos; c. 1870): The surface tension gamma of liquid is associated to its temperature T, the liquid's critical temperature, T*, & its
If a proton and an electron have same de Broglie wavelength, which has more kinetic energy and momentum?
Work: In its technical sense, work is the product of force and distance, and work is done only when a force causes movement. We can see this by the formula: Work = Force x
help by post offoce box explan rasistance of a wire
two free charges +q and +5q are a distance L apart. A third charge is placed so that the entire system is in equilibrium.find the location and magnitude and sign of the charge.
(i) On the average, particles are separated by a distance of the order of 10-10 m and exert a force of attraction of the order of 10-11 N on each other. (ii) The force of atta
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