Two centrifuges rotate at the same peripheral velocity of 53.34 m/s. The bowl of the first centrifuge has a radius of 76.2 mm while the radius of the second is 305 mm. Calculate the revolutions per minute and the ratio of the centrifugal force to gravitational force developed in each bowl.

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.