Physics, 06.05.2021 16:10 Picklehead1166
Light travels through a material at a speed of 1.7 x 108 m/s. What is the index of refraction for the material?
Answers: 1
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Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?
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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.
Answers: 3
Light travels through a material at a speed of 1.7 x 108 m/s. What is the index of
refraction for...
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