What waves are used in the hospitals to take pictures of bones

The four giant gas points that are made primarily of lightweight elements are

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively