Please answer questions 3, 6, 8 AND SHOW FULL WORK for questions 3 and 8.

Will give good review.

3. [1/5 Points] DETAILS PREVIOUS ANSWERS LARCALCEW 1 5.2.024. MY NOTES ASK YOUR TEACHER Find the total mass of two turns of a spring with density p in the shape of the circular helix below. r(t) = 3cos(t)i + 35in(t)j + 7tk p(X, V. Z) = 2 56 58 1:2 6. [-/1 Points] DETAILS LARCALCET7 15.2.056. MY NOTES ASK YOUR TEACHER Evaluate the line integral along the path C given by x = 2t, y = 6t, where 0 s t s 1. ( ) - x ) dx + 5x2y2 dy8. [3/8 Points] DETAILS PREVIOUS ANSWERS LARCALCET7 15.2.015. MY NOTES ASK YOUR TEACHER Consider the following. C: counterclockwise around the triangle with vertices (0, 0), (1, 0), and (0, 1), starting at (0, 0) (a) Find a piecewise smooth parametrization of the path C. (t,0 ) Osts1 r(t) = (2 - t,t - 1) ists2 (0,3 - t) 2sts 3 (b) Evaluate 1 ( * + 5vx ) ds. + 16V2 + 10 3 3 X