Two infinitely long coaxial cylindrical surfaces, r=a and r=b (b> a), carry surface charge densities ps and peb, respectively carry surface charge densities (a) determine e everywhere. (b) what must be the relation between a and b in order that e vanishes for r> b?

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume