The mirror housing of the telescope is supported by a 6-bar space truss. the mass of the housing is 3 mg (megagrams), and its weight acts at g. the distance from the axis of the telescope to points a, b, and c is 1 m, and the distance from the axis to points d, e, and f is 2.5 m. if the telescope axis is vertical what are the axial forces in the members of the truss?

When an object is heated it contracts. a. true b. false

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].

The mantle is made up of which structural zones?