A reinforced circular column of 400 mm diameter has 4 steel bars of 20mm dia. embedded in it. Find the maximum load which the carried by column, If the stresses in steel and concrete are not exceed 12 Mpa and 5 Mpa respectively. Take modulus of elasticity of steel as 18 times the concrete.​

Answer;

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.

explanation; convection currents are the circular pathways taken by a fluid that enhances heat transfer by the process known as convection which occurs in fluids.convection currents transfer heat from one place to another by mass motion of a fluid. earth mantle is in a semi-liquid state and behaves like any other fluid, rising up from the bottom of the mantle after becoming hotter and less dense from heat of the earth's core, as the rock loses heat into the earth's crust it becomes cooler and more dense, then sinking back down to the core, then repeating the cycle.

The first one auditory. hope i . *)