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
Physics, 22.06.2019 07:20
What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.
Answers: 3
Physics, 22.06.2019 08:50
You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?
Answers: 1
Physics, 22.06.2019 16:00
Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative
Answers: 1
The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm....
Health, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
English, 27.03.2020 20:49
History, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
History, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49
Mathematics, 27.03.2020 20:49