A 150 kg steel rod in a building under construction supports a load of 6050 kg. During the day, the rod’s temperature increases from 22°C to 47°C. This temperature increase causes the rod to thermally expand and raise the load 5.5 mm. a. Find the energy transferred as heat to or from the rod. (Hint: Assume the specific heat capacity of steel is the same as for iron.)

b. Find the work done in this process. Is work done on or by the rod?

c. How great is the change in the rod’s internal energy? Does the rod’s internal energy increase or decrease?

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force