a uniform beam 6 metres long weighing 4kg rests on support at P and Q placed left and right from each of the beam. Weights of mass 10kg and 8kg are placed near P and Q respectively one each end of the beam. calculate the reactions at P and Q,

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.