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salute for answering these Qs Sorry for asking 2 Qs but this is urgent 1. An aluminium plate fixed in a horizontal position has a hole of diameter 2cm A steel sphere of diameter rests on this hole. All the lengths refer to a temperature of 10degreesC. The temp of whole system is slowly increased. At what temp will ball fall down. alpha of steel = 11x10^(-6) and alpha of aluminium is 23x10^(-6) 2.A metre scale made of steel reads accurately at 20degrees C. In a sensitive experiment distances accurate upto 0.055mm in 1m are required. Find the range of temp in which the experiment can be performed with this metre scale. alpha of steel is same as above Q. explain in datail also please


salute for answering these Qs
Sorry for asking 2 Qs but this is urgent
1. An aluminium plate fixed in a horizontal position has a hole of diameter 2cm A steel sphere of diameter rests on this hole. All the lengths refer to a temperature of 10degreesC. The temp of whole system is slowly increased. At what temp will ball fall down. alpha of steel = 11x10^(-6) and alpha of aluminium is 23x10^(-6)
2.A metre scale made of steel reads accurately at 20degrees C. In a sensitive experiment  distances accurate upto 0.055mm in 1m are required. Find the range of temp in which the experiment can be performed with this metre scale. alpha of steel is same as above Q.
explain in datail also please


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