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23 Nov 2019
1 ) A 3.5 m length of copper pipe extends directly from a hot-waterheater in a basement to a faucet on the first floor of a house. Ifthe faucet isn't fixed in place, how much will it rise when thepipe is heated from 20.0° C to 85.9° C. The coefficient of linearexpansion for copper is 1.6 10-5 K-1. Ignore any increase in thesize 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 theyare to just touch when the temperature is T = 49.5° C? unit inmm
3 ) Find the mass (in kg) of one molecule of sodium chloride(NaCl). unit in kg
1 ) A 3.5 m length of copper pipe extends directly from a hot-waterheater in a basement to a faucet on the first floor of a house. Ifthe faucet isn't fixed in place, how much will it rise when thepipe is heated from 20.0° C to 85.9° C. The coefficient of linearexpansion for copper is 1.6 10-5 K-1. Ignore any increase in thesize 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 theyare to just touch when the temperature is T = 49.5° C? unit inmm
3 ) Find the mass (in kg) of one molecule of sodium chloride(NaCl). unit in kg
Hubert KochLv2
1 Oct 2019
