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What does tw mean on an elevation map?

"TW" on an elevation map typically stands for "top of the world," indicating the highest point on that specific map. It signifies the peak or summit of a particular area in terms of elevation.


Why does it improve the accuracy of the experiment it Tf Tr equals Tr Tw?

When Tf Tr equals Tr Tw, it improves the accuracy of the experiment because it allows for an efficient transfer of heat energy between the sample (Tf), reference (Tr), and the surroundings (Tw). This ensures that the temperature readings are stable and reliable, eliminating any potential errors or fluctuations in the measurements. This consistency in temperature conditions helps to enhance the precision and reliability of the experimental results.


How much does a 30lb propane bottle fully filled weigh?

There will be a TW on the side of the cylinder this is the tare weight the weight of the cylinder empty. (TW 27) would be an 27 pound empty cylinder. A full cylinder will weigh 30 pounds more than the tare weight.


What does 0.33 TW on jewelry mean?

0.33 Tw = 0.33 carats total weight. From that I would infer that you item whatever it might be will probably have more than one stone in it and these may be a series of smaller stones with there total mass being 0.33 carats or one third of a carat. Carat is a measure of mass with one carat = 1/5gram 200 milligrams This is a measure of any mass of any stones with each stone having its own specific mass.


How do you tell when propane bottle nears empty?

All propane cylinders will have a TW stamped in the valve protection ring. The tare weight or TW is the weight of the cylinder empty. TW 18 would be a 18 pound empty cylinder. If you weigh a TW 18 cylinder on a bathroom scale, and it weighs 28 pounds there would be 10 pounds of propane remaining in the cylinder.