If we have a sample of silicon (Si) atoms that has 14 protons, 14 electrons, and 18 neutrons
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Answers: 3
Physics, 21.06.2019 22:50, toddbecca9
Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]
Answers: 2
Physics, 22.06.2019 19:50, fili20
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 Γ 10-6 ΟΒ·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 Β’ 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 itβs resistivity when at operating temperature? explain.
Answers: 3
Physics, 23.06.2019 00:30, tressasill
Arope has one end tied to a vertical support. you hold the other end so that the rope is horizontal. if you move the end of the rope back and forth with a frequency of 4 hz, the transverse wave you produce has a wavelength of 0.5 m. what is the speed of the wave in the rope?
Answers: 1
English, 27.10.2020 06:30
Mathematics, 27.10.2020 06:30
Mathematics, 27.10.2020 06:30
English, 27.10.2020 06:30
Mathematics, 27.10.2020 06:30