You hurry to your physics class after a yummy meal in the cafeteria. In your arms you carry books that include your highly valued Composition book. All together the food and the binder weigh 22 N. How much work is done on the books when you walk 80 m along the hall, go up stairs 12 m high, and then turn right for an additional 15 m to class?​

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.