Why does a solid change to liquid when heat is added? a. the spacing between particles decreases b. particles lose energy c. the spacing between particles increase d. the temperature decreases

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

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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].