Question 3 1 pts
Two students are doing The Cart and the Brick Lab. The cart has a mass of 8.8 kg cart
and is initially moving at 7.2 m/s. A brick of mass 5.6 kg is then dropped on top of the
cart and the two roll away together. Calculate the final velocity of the brick and cart, and
then round your answer to the tenths place.

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.