What are the controlled variables of the specific latent heat of vaporization of water

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

How many neutrons does plutonium -196 with an atomic number of 78.

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