If gravitational forces are pulling the planet into its sun, why is it still revolving around its sun? Why doesn’t the star just fall into its sun? What law of gravity explains this?

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.