Driving along a boring stretch of interstate in illinois, you start experimenting using the average speed equation you learned in class. you drive 29 meters per second for 120s, then 35 meters per second for 300s. then you entertain yourself by determining your average speed during those time intervals. what is your average speed for the experiment?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.