find the mass and center of mass of a wire in the shape of the helix x = t, y = 3 cos(t), z = 3 sin(t), 0 ≤ t ≤ 2, if the density at any point is equal to the square of the distance from the origin.

Hey i just needed some points

Could we get the starts and then i can you!

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's.