Discover Questions

Integral from 0 to 4 of absolute value of (x^2 -4x +3) dx. I keep getting 4/3 and not 4...? Probability math question! Whole question is in the answer section since it wouldn't fit.? A kid moving 3.18 m/s jumps on a slip and slide (Uk=0.0751). How far has he slid when his velocity is reduced to 2.00 m/s?
Please help!!? Whats the conjugate base of NO2-? Is this wood fossil?