- Heavy grey coloured cloud which are responsible for rain are called?

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What limits the size of solar power farms? Find: calculator? T varies inversely with the cube of w. When w is 3, T is 1/9.
Find the value of w when T is 1/243? If 2.25 l of methane gas burns, how many moles of oxygen will be needed for complete combustion? What does the number of the solutions of the equations 4x^2 + 4x + 1 tell you and how can you write x^2 - 2x - 7 in completed square form?