A person standing on a balcony throws an object upward with an initial speed of 7 m/s. The object comes down, missing the balcony, and strikes the ground 2 sec later. How high is the balcony?

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.