What happens to the resistance of most common metals as the temperature of the metal increases? What is the most important element for creating a magnetic field, and why? Comic-book superheroes are sometimes able to punch holes through steel walls. If the ultimate shear strength of steel is ...
An aluminium rod is fixed at one end and at the other end you have a disk. You hand increasingly heavy weights on the disk and measure how much the rod shears (twists). We were asked to make a graph of the shear torque vs. angle of torsion. It came out quadratic. I'm trying to...