Could a mixture be made only element and no compounds

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

Anybody wanna ? (picture included? )

How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing