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PHIL1070 Study Guide - Final Guide: Timocracy, Tyrant, Glaucon

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School
Boston College
Department
Philosophy
Course
PHIL1070
Professor
svetelj

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Document Summary

Glaucon divides all goods into three different types. Goods that are good for itself, things that are good because of the consequences and things that are both of these. The legend of the ring of gyges is about a magical ring that gives the ring bearer the ability to become invisible. The foundational principle of human society to socrates is the principle of. Socrates builds the perfect city by having three different groups all serving their individual purpose. There will be guardians who will be our wise philosophical rulers. Our auxiliaries who will be our warriors and defend our city. Then there will be producers who deal with producing all of the goods for the city. There will be no money involved in the city to get rid of wealth and poverty. Everyone will serve his or her own purpose and the city will be just: nature does not produce warriors; they have to be educated.

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Related Questions

I am stuck on this question, with an idea of what the answerif:

An engineer has designed a small and precise device with a built inmass on a spring damped oscillator with a spring constant k = 10.0N/M, mass m 1.00 g and variable damping constant b. The first testof the device showed that the amplitude of oscillations dropped to25% of its initial value in 23.1 ms. This time interval wasinappropriately long for the project and should be shortened. Canthe engineer halve the initially obtained time it takes to reducethe apmplitude to 25% of its initial value by varying the dampingconstant in his device?

a) if yes, what change in the damping constant b can help theengineer reach the design objective?

b) if no, why not?

I think that I am going to run into an issue of over damping,meaning that the answer is b. Either way, I have tried to solve forb itself, and to no avail. Any help would be greatlyappreciated.

The measure of one’s ability to perceive spatial differencesbetween objects is termed visual acuity. For this problem, assumethe center-to-center cone spacing in the human fovea is 2.5 µm, andthat the focal length of the eye is 24.3 mm (the distance from thefront of the eye to the retina).

(a) If the criterion for the eye to distinguish between two pointobjects in space is that there must be one unstimulated cone lyingbetween the two cones stimulated by the light from the pointobjects, what is the acuity of the eye in arc-minutes?

(b) Measurements have shown that an emmetropic eye has about 1arc-min of visual
acuity. Does this agree with the result you computed in part (a)?If not, give some
reasons why this might be.

(c) Imagine that you are designing a freeway traffic sign. Theletters should be clearly
readable by a person with normal vision from a quarter-mile away.What is the
smallest linewidth that the letters can have?

(d) During a long drive to Las Vegas, Patrick is sitting in thefront passenger seat, trying to read the reversed numbers on thefront license plate of the car behind him by viewing them throughthe passenger-side rear-view mirror, which reads, “Objects in themirror are closer than they appear.” Patrick is famous for hisknowledge of trivial facts, so he happens to know that a commonfocal length for these mirrors is 1350 mm in magnitude and that thelinewidth of the numbers on a license plate is 9 mm. If the car isapproaching from behind and one lane to the right, at what distancecan he start to clearly read the numbers on the license plate?

In order to solve the problem you must refer to the first partwhich i already solved and I am 200% sure of the answers, however Iam stuck on the second part and I need help asap. Please do not getscared when you look at this problem and thank you soo much inadvance.

A wheel 75 meters in diameter is mounted vertically on an infinitefrictionless plane at the origin. The infinite frictionless planehas a grid of Cartesian coordinates on it. The moment of inertia ofthe wheel is mr^2. The mass of the wheel is 2000kg. There is anengine connected to the wheel that can produce a torque of 2.34x10^6 Nm. There is a 50 kg object attached to the circumference ofthe wheel that is attached to the wheel with a remote releasemechanism. The wheel is placed on the origin so that the plane ofthe wheel contains the point x=50 meters and y=86.8 m. The wheel ispositioned so that the object is just above the plane at the 6o'clock position. The engine is engaged and begins to apply thetorque to the wheel at 12:00 noon on March 1, 2011. The wheelbegins to rotate in the counterclockwise direction. The torque isapplied for 4 x 10^4 revolutions. At that point the object isreleased from the wheel and a 75 Newton motor accelerates theobject in the direction it is released. The motor is fired for 2.34x 10^4 seconds. (the following questions i have already answered)What is the angular velocity and rotational KE of the object justbefore it is released? (answer for that is 6.39 x 10^2 rad/sec and5.89 x 10^11 J). What angle does the path of the object make withthe x axis? (answer is 60.05 degrees). Where is the object on theinfinite frictionless plane when the motor stops (what are itscoordinates....answer is x=4.85x10^8m y=8.40x10^8m). What is thevelocity and linear KE of the object when the motor stops?(5.91x10^4 m/sec and KE= 8.73 x 10^10J). How much work was done onthe object up until the time the motor stopped? (8.73 x 10^10J).(Hint: the mass of the wheel is 2050 kg while the torque is appliedand the object is attached).

YEA I know what you are thinking at this moment. Difficult right?Please give it a chance and have faith in yourself. Here is thepart I had difficulty with:

After the engine stops firing the object is turned around so thatthe engine can be used to stop the object. The motor is fired atits rated thrust to stop the object. Unfortunately it malfunctionsand shuts down after an hour and the object coasts from then on. Atthe end of an hour of coasting it encounters a ramp that is 2000meters high and slopes up at an angle of 20 degrees. The objectclimbs the ramp and flies off the ramp into the air when it reachesthe end of the ramp. It strikes the plane and digs a crater 5meters deep in the plane and comes to a stop. How far from the endof the ramp does it land? Where does it land on the plane (as incoordinates)? What is the resultant velocity of the object and whatis the acute angle of the resultant velocity with the plane when itstrikes the plane? What is the KE of the object when it hits theplane? What date and time is it when the object lands on the plane?How much work was done on the object to stop it? How long did ittake to stop? What was the deceleration of the object in m/sec^2?What was the force on the object in Newtons to stop it?

If you are from MIT I have faith that you can do this. I am only ajunior in high school taking first year physics that is not evenAP. My teacher is from MIT and said he did this kind of stuff whenhe was there. Please please please help me! I'm desperate.