The beams consists of 4 boards connected together to make an upside-down y-shape. Each of the boards has a thickness of 1.25 in. The cross section of the beam is subjected to a moment, M, acting about the z-axis. Determine the normal stress from bending at points A and B. M

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material