La catodul unei băi electrolitice prin care circulă un curent electric cu intensita- tea de 2,5 A în 50 min. s-au depus 4,65 g de cositor. Să se determine:

a) echivalentul electrochimic al cositorului;

b) intervalul de timp în care la catod s-ar depune 8,37 g de cositor la o intensitate

a curentului prin baie egală cu 7,5 A.

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

The force it would take to accelerate an 900-kg car at the rate of 6m/s2