John is a field researcher who studies social interaction within motorcycle groups. he is not an accomplished rider himself, but he is able to obtain jobs at various motorcycle shops that allow him to observe members of motorcycle groups and to socialize with them after work. he lets members think that he is a regular employee and does not mention his research role to anyone connected with the groups. his note-taking is done after hours in his own apartment. his role as a field research is that of a: a. complete observer
b. partial observer
c. participant and observer
d. complete participant

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

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

The particles that are found in the nucleus of an atom are