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Introductory Physics Homework Help
Do you need to account for the water heating up to the boiling point?
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[QUOTE="gmax137, post: 6834722, member: 112505"] Are these values typical? I just tried this, twice. First trial, 60 seconds brought the water from 68 to 153 F (20 to 67C). I saw no change in the mass. Second trial, I ran the oven for 90 seconds to bring the water from 68 to 186F (20 to 85C). My mass went from 7.0 to 6.9 ounce. Unfortunately all I have is a cheap digital kitchen scale, so the "loss" of 0.1 oz (~3 gram) has a lot of uncertainty. But your 10 ml should be seen even on my scale, that's 0.35 ounces. I will have to think of a better way to do this. OBTW, using the numbers I measured, it works out to 649 watts in trial 1 and 651 watts in trial 2 (ignoring the mass defect). At least that is consistent. [/QUOTE]
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Introductory Physics Homework Help
Do you need to account for the water heating up to the boiling point?
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