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3. [-/1 Points] DETAILS OSCALC1 6.4.171-180B.WA.TUT. Find the length of the curve f(x) = + 1 from x = 2 to x = 4. 6 2x4. [0/1 Points] DETAILS PREVIOUS ANSWERS Calculate the arc length over the given interval. In(x), [1, 9e ] 2 81e2 - 1 In (9 + 4 25. [-/1 Points] | DETAILS I OSCALC16.4.172. Find the length of the function ofx over the given interval. If you cannot evaluate the integral exactly, use technology to approximate it. (Round your answer to four decimal places.) y = x2/3 from (1, 1) to (8, 4) 8. [-/1 Points] DETAILS OSCALC1 6.5.224-228.WA.TUT. Find the total mass of a 5-m rod whose linear density function is p(x) = 12(x + 1) 2kg/m for 0 s x s 5. kg 123 Tutorial12. [0/1 Points] DETAILS PREVIOUS ANSWERS OSCALC1 6.6.256. Calculate the center of mass for the collection of masses given. m = 9 at x = 0, 1, 2, 8 11 X = 9 X13. [-/1 Points] DETAILS OSCALC1 6.6.261. MY NOTES P The center of mass of a thin rod oriented along the x-axis from x = a to x = b with linear density p(x) is given by x = _, where M = x p(x) dx is the moment and m = p(x) dx is the total mass of the rod. Compute the center of mass x. p(x) = x for x E (0, L) X = + Additional Materials eBook # Show My Work (Optional) ? 14. [-/1 Points] DETAILS OSCALC1 6.6.266. MY NOTES PF The center of mass of a thin rod oriented along the x-axis from x = a to x = b with linear density p(x) is given by x = , where M = x p(x) dx is the moment and m = p(x) dx is the total mass of the rod. Ja Compute the center of mass x. p(x) = x + x for x E (0, 1) X =