PHIL 2170 Lecture Notes - The Good Life, Storge

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olivemacaw308

15 Nov 2011

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In order to have real intimacy, this requires active involvement of both body and mind. Follow our desires but not get involved with anyone who crosses our paths. Lady chatterley gives us a way to get out of the bounds of convention relationship breaks the bound of convention. Lawrence wants people to feel troubled about their complacency. Image of the blood: builds the physical bodily aspect, blood represents holistic image of a united human being, state of mind humans need to follow their desires rationally. Lawrence: the good life is a natural life, one in which we experience harmony between each other, between ourselves and the world we live in and between our body and our mind. Halwani: 3 kinds of love: eros: sexual, erotic, passionate, romantic love, philia: friendship platonic, familial love love of community", agape: caritas, altruistic (doing something for no return, completely unselfish),

Related Questions

Imagine that you could take 1 mole of protons and one mole of electrons in the previous question and separate them by a distance of r=1m. What would be the force of attraction F between the two charges? Compare the magnitude of this force to the sort of ~1000 N forces that you calculated in the first quarter for conventional mechanical systems. Does this really tell you something about the relative strength of electrostatic forces and gravitational forces?

A force F⃗ of magnitude F making an angle θ with the x-axis is applied to a particle located along the axis of rotation A, at Cartesian coordinates (0,0) in the figure. The vector F⃗ lies in the XY plane, and the four axes of rotation A, B, C, and D all lie perpendicular to the XY plane. (Figure 1)

A particle is located at a vector position r⃗ with respect to an axis of rotation (thus r⃗ points from the axis to the point at which the particle is located). The magnitude of the torque τ about this axis due to a force F⃗ acting on the particle is given by

τ=rFsin(α)=(moment arm)⋅F=rF⊥,

where α is the angle between r⃗ and F⃗ , r is the magnitude of r⃗ , F is the magnitude of F⃗ , the component of r⃗ that is perpendicular to F⃗ is the moment arm, and F⊥ is the component of the force that is perpendicular to r⃗ .

Sign convention: You will need to determine the sign by analyzing the direction of the rotation that the torque would tend to produce. Recall that negative torque about an axis corresponds to clockwise rotation.

In this problem, you must express the angle α in the above equation in terms of θ, ϕ, and/or π when entering your answers. Keep in mind that π=180degrees and (π/2)=90 degrees.

Part A

What is the torque τA about axis A due to the force F⃗ ?

Express the torque about axis A at Cartesian coordinates (0,0).

τA =

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Part B

What is the torque τB about axis B due to the force F⃗ ? (B is the point at Cartesian coordinates (0,b), located a distance b from the origin along the y axis.)

Express the torque about axis B in terms of F, θ, ϕ, π, and/or other given coordinate data.

τB =

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Part C

What is the torque τC about axis C due to F⃗ ? (C is the point at Cartesian coordinates (c,0), a distance c along the x axis.)

Express the torque about axis C in terms of F, θ, ϕ, π, and/or other given coordinate data.

τC =

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Part D

What is the torque τD about axis D due to F⃗ ? (D is the point located at a distance d from the origin and making an angle ϕ with the x axis.)

Express the torque about axis D in terms of F, θ, ϕ, π, and/or other given coordinate data.

apricotclam488

Magnetic field of coils
Two thin coils of radius R = 4 cm are x = 24 cm apart andconcentric with a common axis. Both coils contain 10 turns of wirewith a conventional current of I = 3 amperes that runscounter-clockwise as viewed from the right side (see thefigure).

(a) What is the magnitude and direction of the magnetic field onthe axis, halfway between the two loops, without making theapproximation z >> r? (For comparison, remember that thehorizontal component of magnetic field in the United States isabout 2 multiplied by 10-5 tesla).
|B| =

(b) In this situation, the observation location is not very farfrom either coil. Calculate the magnitude of the magnetic field atthe same location, using the 1/z3 approximation.
|Bapprox| = 3 T

The percent error of an approximate result can be found by100*abs(1-(approx)/(exact)). What percentage error results if youcalculate the magnetic field using the approximate formula for acurrent loop instead of the exact formula?
4% error

(c) What is the magnitude and direction of the magnetic fieldmidway between the two coils if the current in the right loop isreversed to run clockwise?

PHIL 2170 Lecture Notes - The Good Life, Storge

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