A civil engineer is performing a tensile test on a brick using a tension machine. Immediately after he adds the first weight, the brick splits into two parts. Why does this happen? A. high elastic modulus of brick B. low tensile strength of brick C. compressive stress on the brick D. shear stress on the brick E. torsion stress on the brick

Acountershaft is supported by two tapered roller bearings using indirect mounting. the radial bearing loads are 1120 lb for the left-hand bearing and 2190 lb for the right-hand bearing. the shaft rotates at 400 rpm and is to have an l10 life of 40,000 hours and an application factor of 1.4. assume ka2k 15, and find the required radial rating of each bearing