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Integrated Concepts (a) Using the values given for an MHD drive in Exercise $22.59,$ and assuming the force is uniformly applied to the fluid, calculate the pressure created in $\mathrm{N} / \mathrm{m}^{2} .$ (b) Is this a significant fraction of an atmosphere?

Part $(a) :$ The pressure is $1.0 \times 10^{3} \mathrm{N} / \mathrm{m}$Part $(\mathrm{b}) :$ The pressure is not significant compared to the atmospheric pressure.

Physics 102 Electricity and Magnetism

Chapter 22

Magnetism

Magnetic Field and Magnetic Forces

Sources of Magnetic field

Electromagnetic Induction

Inductance

Cornell University

Simon Fraser University

University of Winnipeg

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Let's calculate the partial pressure of nitrogen in the atmosphere. Let's first calculate the mass of nitrogen. We're told that we have 400 45 um, micro moles, so we'll convert this two moles. Um, one micro mole is equivalent to tend to the negative six moles and Mohler mouths one more of end to molar mass of 28.0 grams, and this would yield 1.25 times 10 to the minus 10 grams of nitrogen. And then to calculate the partial pressure we're going to use Henry's law. C is equal to K partial pressure of the gas, and it's so C represents the solid ability of the gas, said we told its concentration, Uh is 445 micro Um, my commuter micro Moeller. So C is 445 times 10 to the negative six. Mohler The constant is equal. The 0.61 times 10 to the negative. Three moles leader minus one atmosphere minus one. Pressure of the gas. So solving for the pressure of the gas, which is the partial pressure vent to we get 73 times 10 to the minus two atmospheres. So here we have the partial pressure of into gas and the mass event. You guess

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