A sealed container holds 3 moles of nitrogen (N2) gas at a pressure of 3 atmospheres and a temperature of 315 K. The atomic mass of nitrogen is 14 g/mol. The Boltzmann constant is 1.38 × 10-23 J/K and the ideal gas constant is R = 8.314 J/mol•K = 0.0821 L ∙ atm/mol ∙ K. The average translational kinetic energy of a nitrogen molecule, in 10-20 J, is closest to
Answers: 2
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
Physics, 23.06.2019 00:00
Determine the largest intensity w of the uniform loading that can be applied to the frame without causing either the average normal stress or the average shear stress at section b–b to exceed σ=19 mpa and τ=24 mpa, respectively.
Answers: 3
A sealed container holds 3 moles of nitrogen (N2) gas at a pressure of 3 atmospheres and a temperatu...
Mathematics, 23.06.2019 22:30
Biology, 23.06.2019 22:30
Mathematics, 23.06.2019 22:30
English, 23.06.2019 22:30
Mathematics, 23.06.2019 22:30
Social Studies, 23.06.2019 22:30