A block of mass mblock = 1.1 kg rests on a cart of mass mcart = 3.4 kg, which moves without friction on a horizontal surface. The coefficient of static friction between the block and the cart is µ = 0.69. The cart is accelerating to the right.

1) What is the maximum acceleration such that the block does not slide on the cart? Amax = ?m/s2

2) What is the magnitude of the force on the cart required to provide the acceleration Amax? F =?

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.