Recent content by skittlebrew

  1. S

    Thermal expansion in heat engine

    A brass piston of diameter 25 cm at 20 degrees C must be able to function at 150 degrees C. In order to do so it must fit inside a steel cylidrical chamber. What must the minimum initial diameter of the cylinder be so that the piston never rubs against it. alpha=2x10^-5 for brass...