Scientists use this part of the electromagnetic spectrum to diagnose broken bones. x–rays infrared waves gamma rays ultraviolet waves

Which property of fossils allow scientists to determine the relative rock ages..

Can anybody me with this? ? (picture included.)

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].