1.

A rod of length L is cut into two pieces, one of length L/5 and one of length 4L/5. What is the ratio of the change in length of the rod of length L/5 to the change in length of the rod of length 4L/5 when the temperature of both pieces is increased by AT?The cavity within an iron sphere (with a coefficient of volume expansion, B = 36 x 10-6 (C)1) has a volume of 1.80 x 10- ma. Into this cavity is placed 1.753 x 10-3 m3 of a liquid whose = 1000 x 10 (C.). Both the iron and the liquid have the same temperature. By what amount 47 should the temperature of the sphere and the liquid within it be increased, so that the liquid just begins to spill out