Millikan measured the electron's charge by observing tiny charged oil drops in an electric field. each drop had a charge imbalance of only a few electrons. the strength of the electric field was adjusted so that the electric and gravitational forces on a drop would balance and the drop would be suspended in air. in this way the charge on the drop could be calculated. the charge was always found to be a small multiple of 1.6e-19 c. find the charge on an oil drop weighing 4.31 multiply. gif 10-14 n and suspended in a downward field of magnitude 3.85 multiply. gif 104 n/c.

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points