Pulling a boat forward into a docking area requires 157J of work. The boat must be pulled a distance of 5.3m. What is the force with which the boat is pulled?

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