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PHIL 112 Lecture 2: Ethical Theories

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7 Sep 2016

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George Mason University

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Kantianism: what is the intent, what"s good without quali cation. Act only from moral rules that you can at the same time will to be universal and moral laws. If everyone can act on the law without contradiction. Consequences do not happen, only the intention matters, Act so that you always treat others as an end, and never as an end only. Thought that people should never will, and wills involving lies can never be universalized. Act utilitarianism: morality is a matter entirely of consequences.

Related Questions

Define (a) coherent radiation (b) superposition principle (c) refractive index of a medium (d) normal dispersion of a substance (e) anomalous dispersion (f) work function of substance(g) photo electric effect(h )ground state of molecule(i )electronic excitation (j ) fluroscence(k) (l)phosphorence (m) transmittance (n)absorptivity (o)absorptance (p) vibrational relaxations (q) stokes shift

whitebuffalo354

Consider an L-R circuit as shown in the figure.Thebattery provides 12.0 V of voltage. The inductor hasinductanceL, and the resistor has resistanceR= 150 Î©. The switch is initiallyopen as shown. Attime t = 0, the switch is closed. At time t aftert = 0 the currentI(t) flows through the circuit as indicated in thefigure.

What is the voltagechange V_r(t)across the resistor at time tafter t = 0?

(correct answer b)

What is the voltage changeV_ind(t)across the inductor at time t after t = 0? In thefollowingexpressions, ÎI/Ît denotes the time rate of change ofthecurrent in the inductor at time t?

(correct answer d)

After the switch is closed, thecurrentin the circuit grows over time approaching a constant value.Ingeneral, at time t after a voltage source is connected to anL-Rcircuit, the current I(t) in the circuit is given bytheexpression

I(t)=V/R(1-e^-t/Ï)

where V is the voltage provided bythebattery, R is the resistance of the resistor, and Ï is thetimeconstant characteristic of the circuit.

What is the current I(Ï) flowing inthecircuit shown in the figure at one time constant after t =0?

Express your answer in amperes.

Hint: To find the current inthecircuit after one time constant, use the expression forI(t)given in the problem, with t equal to Ï. Do not try todeterminethe time constant for this circuit. You would not be ableto do sobecause the inductance L is unknown. Instead, afterplugging in thenumerical values for V and R appropriatefor this circuit andsubstituting Ï for time, simplifyyour expression to get a numericalvalue for the current.

Problem 4.15 A hydrogen atom starts out in the followinglinearcombination of the stationary states n = 2, l=1, m = -1:

Ï(r,o) = (1/â2) ( Ï 211 +Ï 21-1 )

(a) Construct Ï (r,t). Simplify it as muchas youcan.

(b) Find the expectation value of thepotentialenergy, <V>. (Does it depend on t?) Give both theformula andthe actual number, in electron volts.

(c) What possible values of energy couldyoumeasure and with what probability(s)?

(d) What possible values of the magnitudeoforbital angular momentum could you measure and withwhatprobability(s)?

(e) What possible values ofthez-component of orbital angular momentum could you measure andwithwhat probability(s)?