•a compound microscope uses a 75.0-mm lens as the objective and a 2.0-cm lens as the eyepiece. the specimen will be mounted 122 mm from the objective. determine (a) the barrel length and (b) the total magnification produced by the microscope

b.transmitters send radio waves, and receivers capture radio waves.

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

root word, prefixes, and suffixes

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..