4. Suppose there is a well and you would like find out how deep it is. You are given a stop watch and a small stone, will you be able to find out the depth of the well? Explain the procedure and find out a) the depth of the well is the time you get is 2s b) final velocity of the stone

- measure reactants precisely. ( first choice)

- stir to the reaction take place. ( second choice)

- wait patiently until the reaction completes. ( fourth choice)

- make sure to recover as much copper as possible. ( last choice)

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.