It is known that a horizontal beam with dimensions 2 m x 0.5 m x 0.25 m is pressed by a force of 750,000 N from above. Calculate the possibility of a change in the dimensions of the height of the beam if the beam is made of:
a. Stainless steel 304 (E210 GPa)
b. Hot pressed silicon carbide (E = 200 GPa)