- Four equal charged +Q are placed at the corners of a square of side a.?

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Why erythrocytes have a light section in the middle? Which pattern of speciation is most important in nature? Allopatric or sympatric why? 6g of Mg in 16g of O2 are burnt. Calculate mass of MgO formed.? Multiply matrices A and B of any sizes legally (no size compatibility requirment). What kind of matrix multiplication am I? Let X1 & X2 have joint pmf p(x1, x2)=(x1x2)/36. 0 otherwise Find joint pmf of Y1=X1X2 and Y2=X2?