A cylindrical glass tube 11.8 cm in length is filled with mercury (density = 13.6 g/mL). (The volume of a cylinder of radius r and length h is V = πr2h.) The mass of mercury needed to fill the tube is 105.5 g. Calculate the inner diameter of the tube. cm

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d