Physics
Physics, 03.07.2019 08:30, jimjimbaroo2253

What is the main evidence for the structure of the earth that occur from the generation of an earthquake? waves fossils minerals magnetic tension

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Physics, 22.06.2019 16:20, Kkgiddy
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Physics, 22.06.2019 17:00, nickname0097
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Physics, 22.06.2019 18:30, eguzmandpandoracom
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Physics, 22.06.2019 19:50, fili20
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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