Posts Tagged ‘electric tea kettle’
Mold or mineral buildup?
I have a stainless steel Electric Tea Kettle that I bought for school to make hot water when i don’t want to leave the dorms. However, I noticed on the inside what looks like mold. However I can’t really tell because I’m not really used to seeing mold. It’s just a ton of little white spots all over the bottom-inside of the kettle. If it is mold, what can I do to get rid of it?
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Physics 1001 Question: Vaporization of water, rates of heat addition, etc. HELP PLEASE!?
"It takes an electric tea kettle with 20degrees Celcius water five minutes to reach boiling (100degrees Celcuis). How long will it take the water to boil away, assuming the same rate of heat addition?" HELP!!!
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I know the heat of vaporization of water is 2260kJ per kg, but I don’t know how much water is in the tea kettle, so how would i do this?!
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How do you analyze power consumption? Is current constant? (Physics problem follows.)?
You buy an 1700W electric tea kettle while on a study abroad program in Britain, where electricity is delivered to homes at 220V. If you use the tea kettle at home in the United States, where electricity is delivered to homes at 120V, how much power will it consume?
This is how NOT to do it:
1700 = 220(current)
current = 7.727 A
P = 7.727(120) = 927.3 W
Why is that incorrect? What is the correct way to do this?
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How long for water to boil? given change in temp. over time…?
Your electric tea kettle takes water from 20 degrees C to 100 degrees C in five minutes.
You want to know how long it will take to boil the water completely away. You need the
heat energy to vaporize water at 100 degrees C. You know that this is called the “latent
heat” of vaporization in Wikipedia. How long does it take to boil off?
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What is the stupidest thing you have ever done?
Mine happened a couple of years ago. I was at home visiting my parents and I wanted some tea. We have an electric tea kettle so I put some water in it and tunred it on. About 5-10 minutes later, I said to my parents man your tea kettle is slow. My dad said it takes some time be patient. Then he looked over at the tea kettle, noticed it was unplugged and started cracking up. I felt really stupid…BUT I laughed at myself, and I eventually got to ahve some tea.