A concrete test beam 2 X 2 X 12 in., supported at two points 0.2241 from the ends, was found to resonate at 1690 cps.
If the density of concrete is 153 Ib/ft3, determine the modulus of elasticity, assuming the beam to be slender.
The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.