What two element is present in biotite mica that is not present in muscovite mica?

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

What is the equation for electrical work?

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.