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Physics, 29.01.2022 17:10, eharris2694
Velocity problem, look back at the velocity and speed formula to answer this question: A passenger elevator travels from the first floor to the 60th floor, a distance of 210 m in 35 sec. What is the speed of the elevator?.
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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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Velocity problem, look back at the velocity and speed formula to answer this question: A passenger e...
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