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You would need a source of power giving at least 500watts to heat a cup in reasonable time. You could obtain this from a lead acid cell such as a car battery. At 12v you would need a current of say 50 amps (this would give 600watts). So the heating coil should have a resistance of 12/50 ohms = 0.24 ohms. The connectors to and from the battery would need to be rated for 50 amps without heating up appreciably.
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∙ 12y ago
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Which can transfer more heat a cup of boiling water or a cup of tap water?
A cup of boiling water since it has higher temperature. Note that heat transfer depends more on the temperature.
Which can trasfer more heat a cup of bioling water or a cup of tap water?
tap water
If ice melts in cup of water what produces in the cup?
Heat
What evaporates faster a cup of water by the sun or a cup of water boiled?
a cup of water that is boiled since it gives more heat.
Which can transfer more heat 1 cup of boiling water or 1 teapot of boling water?
The cup.
Which can transfer more heat 1 cup or boiling water or 1 teapot of boling water?
The cup.
If you place a cup of sand and a cup of water in the sun which one will heat up faster?
The sand will heat up faster.
Will a metal cup or a styrofoam cup keep the hot water warm after a short time?
It is the Styrofoam cup as it is not a good conductor of heat but the metal cup is a good conductor of heat.
Will water heat more in a black cup or a white cup when sitting in the sun?
Dark objects will absorb more sunlight, converting it into heat energy, which is then passed on to the water - thus making it heat faster.
Which can more transfer heat a cup of boiling water or 1 basin of tap water?
A cup of boiling water since it has higher temperature. Note that heat transfer depends more on the temperature.
Which can transfer more heat a cup of boiling water or 1 basin of tap water?
A cup of boiling water since it has higher temperature. Note that heat transfer depends more on the temperature.
What would be the result of removing heat energy from a cup of water?
The water will get colder.
