Physics, 20.07.2019 03:00 cluchmasters5634
How many neutrons does element x have if its atomic number is 38 and its mass number is 71?
Answers: 1
Physics, 21.06.2019 23:30
To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?
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
How many neutrons does element x have if its atomic number is 38 and its mass number is 71?...
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