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- Find an equation for the tangent plane to the surface z + 4 = xy cos(z) at the point (4, 1, 0). Submit QuestionFind the area bounded by the curve 2. whose parametric equations are x = 4cos t and y = 5sin t.The triangular plate shown in Figure has a constant density ofd = 3 g/cm2.(a) Find the plate’s moment My about the y-axis.(b) Find the plate’s mass M.(c) Find the x-coordinate of the plate’s center of mass (c.m.).
- 1. Let R and b be positive constants. The vector function r(t) = (R cost, R sint, bt) traces out a helix that goes up and down the z-axis. a) Find the arclength function s(t) that gives the length of the helix from t = 0 to any other t. b) Reparametrize the helix so that it has a derivative whose magnitude is always equal to 1. c) Set R = b = 1. Compute T, Ñ, and B for the helix at the point (√2/2,√2/2, π/4).. Seawater has a density 1025 kg/m3 and flows in a velocity field v = yi + xj where x, y, and z are measured in meters and the components of v meters per second. Find the rate of flow outward through the hemisphere x² + y² + z² = 9, z 2 0.Find the center of mass, the moment of inertia about the coordinate axes, and the polar moment of inertia of a thin triangular plate bounded by the lines y = x, y = -x, and y = 1 if d(x, y) = y + 1 kg/m.