Instructions: select the correct answer. why does air at 75% relative humidity and 30ec make your skin feel stickier than air at 75% relative humidity at 10°c? warm air rises while cold air falls.

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton