1 ) A 3.5 m length of copper pipe extends directly from a hot-water heater in a

Question

1 ) A 3.5 m length of copper pipe extends directly from a hot-water heater in a basement to a faucet on the first floor of a house. If the faucet isn't fixed in place, how much will it rise when the pipe is heated from 20.0° C to 85.9° C. The coefficient of linear expansion for copper is 1.6 10-5 K-1. Ignore any increase in the size of the faucet itself or of the water heater. unit in mm

2 ) Steel railroad tracks of length L = 18.20 m are laid at 10.0° C. How much space should be left between the track sections if they are to just touch when the temperature is T = 49.5° C? unit in mm

3 ) Find the mass (in kg) of one molecule of sodium chloride (NaCl). unit in kg

Explanation / Answer

2)Given that Steel railroad tracks of length (l0) =18.20 m The initial temperature is (T1)=100C The final temperature is (T2) =49.500C Coefficient of linear expanison of the steel () =12*10-6K-1 We know that the definition of coefficient of linearexpansion, The space left between the tracks is                                    l = lot                                        = (12*10-6K-1)(18.20m)(39.500C)                                         =0.0086268m                                        =8.6268mm AS per cramster there should be only one post for one Question so please post other Questions seperately 2)Given that Steel railroad tracks of length (l0) =18.20 m The initial temperature is (T1)=100C The final temperature is (T2) =49.500C Coefficient of linear expanison of the steel () =12*10-6K-1 We know that the definition of coefficient of linearexpansion, The space left between the tracks is                                    l = lot                                        = (12*10-6K-1)(18.20m)(39.500C)                                         =0.0086268m                                        =8.6268mm AS per cramster there should be only one post for one Question so please post other Questions seperately We know that the definition of coefficient of linearexpansion, The space left between the tracks is                                    l = lot                                        = (12*10-6K-1)(18.20m)(39.500C)                                         =0.0086268m                                        =8.6268mm AS per cramster there should be only one post for one Question so please post other Questions seperately

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