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An aquarium for larger water animals
A glass aquarium 50 cm by 25 cm is of useful size. Old accumulator cells are suitable, but the glass is not very obvious.
To prepare like an aquarium procure some fine silt from the bottom of a clear stream or pond and wash it carefully in running water. Cover the floor of the aquarium with it to a depth of about 2 cm. Plant a few reeds in this, weighting the roots with a stone or lead ring. Then put in a layer of coarse sand or gravel and some large stones to serve as hiding places for the water insects. Fill with a slow stream of water and permit to stand for a day or two unless clear. Clean water plants should be introduced.
How would you describe in one word fiber optics lighting system? Magic is the one word for describing fiber optic in one word.
Friction of rough surfaces Place two pieces of sandpaper together. Notice the friction that is formed when one is rubbed against the other. Now put some grease among the pieces
What are the magnitude and the sign of a point charge that experiences a force of 0.48 N east when placed in an electric field of 1.6 x 10 5 N/C west? Normal 0
A two farad and a four farad capacitor are connected in series. What single capacitance is "equivalent" to this combination? A 2-farad and a 4-farad capacitor are connected in
Coanda effect The effect which indicates that a fluid tends to flow along a surface, instead of flow through free space.
assignment with graph calculation
A medium is characterised by relative permittivity ε r =45 and relative permeability μ r =5. Determine the speed of e-m wave in the refractive and medium index of the medium.
Rule 1: In order to sum or subtract two physical quantities the quantities must have the similar dimension. The final physical quantity has the similar dimensions. Physical quantit
What will be effect on Newton's rings if: (a) A little oil (μ=1.65) is introduced between the lens (μ=1.5) and the glass plate (μ=1.75) (b) A plane mirror is placed instead o
what are advantages and disadvantages for the six''s thermometer
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