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Physics, 14.10.2019 12:50 shauntleaning
Which concept was supported by taking measurements of the same stars at night and then again during solar eclipses?
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Physics, 22.06.2019 19:50
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.
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Physics, 22.06.2019 21:30
Which sections of the heating curve illustrate this process?
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Physics, 23.06.2019 09:50
How much heat is needed to raise the temperature of 5g of water by 16°c?
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Which concept was supported by taking measurements of the same stars at night and then again during...
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