Physics, 29.07.2021 03:50 jessicascott120305
một lượng khí có thể tích 8dm khối và áp suất 2.10^5OPa biến đổi đẳng nhiệt khí trên đến áp suất 2,5.10^5 Pa thỉ thể tích đó là
Answers: 1
Physics, 22.06.2019 17:20
Properties seen when one one substance changes to another are known as properties
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Physics, 22.06.2019 19:30
Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f
Answers: 1
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.
Answers: 3
một lượng khí có thể tích 8dm khối và áp suất 2.10^5OPa biến đổi đẳng nhiệt khí trên đến áp suất 2,5...
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