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  1. A

    bio questionxxx

    for how tar deposited in the lungs can lead to emphysema: tar can inhibit the cleaning action of the respiratory pathway. it stimulates the goblet cells to make more mucous, cilia get paralyzed, goblet sells swell up, epithelial layer is replaced by fibrous scar tissue, smooth muscles become...
  2. A

    chemistry problem

    so it means chlorine goes from an oxidation state of zero to +5. it's getting oxidised. so isn't the easier way for the answer to just look for an oxidising agent? which is hot concentrated NaOH...?
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    False Starting a graph. Physics Paper 3

    well, my teacher says don't do that zig-zag line thingy, but label it somewhere on the graph paper that there's a false origin. like if you have space in the lower left corner below the x-axis, write "false origin". i lost marks in my phy practical mock cuz i didn't write that :S
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    Help with Statistics Question

    see, 9P9 gives you the number of ways the letters can be arranged, which is very good, but the question asks for "how many different arrangements" are possible. so the point is, there are two Ds and two Ls. the result with 9P9 counts the same arrangement with one L, and then the other L, but if...
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    Math p3 help

    these are basically just general guidelines... if you want the whole step by step solution, i can do that too... especially the integration part and all... it's a lot to type out :P but i think these can suffice... i) we know from the question that dV/dt = 20 and also dV/dt = -kh^2, so...
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