Nina was curious about the height of the eiffel tower. she used a 1.2 meter model of the tower and measured its shadow at 2 p. m. the length of the shadow was 0.9 meter. then she measured the eiffel tower’s shadow, and it was 240 meters. what is the height of the eiffel tower? 4072-07-01-06-00_files/i0170000.jpg a. 45 c. 30 m b. 2880 m d. 320 m

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x, y,z) = (1,-x, z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)