A man can row a boat at the rate of 4 km/h in still water. If he rows the boat in a river where there is a water current of 3 km/h, find his net velocity and draw a vector diagram for each situation: a. as he rows with the current
b. as he rows against the current
c. as he rows across the stream

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.