Early in the morning, when the temperature is 5.5 °c, gasoline is pumped into a car’s 53-l steel gas tank until it is filled to the top. later in the day the temperature rises to 27 °c. since the volume of gasoline increases more for a given temperature increase than the volume of the steel tank, gasoline will spill out of the tank. how much gasoline spills out in this case?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?