PHI 1101 Lecture Notes - Blue Cheese, Rahu, Snakebite

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4 Sep 2014

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Statement: claim that something is or is not the case. A statement is a simple sentence that has just one meaning, for it expresses one thought. Also, a statement asserts that something is the case, or is not the case. When a statement asserts that something is the case, it is called an affirmation; when it asserts that something is not the case, it is also called a negation/ denial. One way to recognize a statement is to look for sentences that could be given as a direct answer to a straightforward question. Premise: a statement given in support of another statement; a claim put forth as a reason for a conclusion. Conclusion: a statement that premises are meant to support. A claim meant to be supported by reasons offered in the argument. Argument: a group of statements in which some of them (the premises) are intended to support another of them (the conclusion).

Related Questions

Helium is very common in the Sun and calcium is rare. Why arehelium lines weak and calcium lines strong in the visible spectrumof the Sun?

How would a star regain its state of equilibrium if the energygeneration rate of a star were to become slightly smaller than itsequilibrium?

Why do metal poor stars have the most elliptical orbits? Fromwhere do they obtain their metals?

why do so few visual binary star systems been fully analyzedto reveal individual masses?

When we look at light curve for an eclipsing binary systemwith total eclipses, how can we tell which star is hotter?

Why do extremely cool stars look fainter than we might expectfrom their luminosities and distances?

Why can't we use solar type stars as spiral tracers? what typeof stars make good spiral tracers? why? What characteristics dothey have to perform this function?

in some old, dense stars, a few blue stars, known as bluestragglers are seen. why are blue stars unexpected in suchclusters? If stars that stick together mix their materialthoroughly when they collide, how might you explain such bluestars?

Supposed you jumped into a black hole feet first? what wouldhappen to you? what would your friends who stayed behind actuallysee?

Why are there different types of galaxies?

what is the eventual fate of the milky way galaxy? whatprocess will lead to this fate? can anything change this?

What are the processes that are responsible for the formationof an elliptical galaxy in comparison to a spiral galaxy? Whycannot galaxies evolve from elliptical to spiral and from spiral toelliptical?

Is it surprising that a pulsar is not seen in every supernovaremnant? why?

How do we form the conclusion that quasars are so vary faraway?

How many times longer does a .50 - M star fuse hydrogen atit's core than does a 1.5 - M star?

How many 0.75 - M main sequence stars would it take to equalthe luminosity of one 15 - M star?

Consider three identical spherical conductors. One conductor,labeled A, is given a
charge of 7mC of type Nell. The charge state of the second andthird conductors, B and C, are unknown. The conductors undergo asequence of 3 contacts that occur ONLY between pairs of conductors.After the contacts, the net charge on each conductor is A: (0.25mCof type Nell), B: (1.875mC of type Nell) and C: (1.875mC of typeNell). Letâs make the assumption that the type Paul charge statecorresponds to an excess of electrons.

Because these three spheres are ______________________ the_______________ can be
freely exchanged between any pair of conductors in contact. Sincethese conductive
spheres all have the same size, when the spheres are placed incontact the ______
_____________ will evenly distribute between the two spheres.Because charge is a
property of particles and the particles can not be destroyed ANDthere is no outside
source of charge, the _______________ charge of the ______________must remain
constant at 4mC of type Nell. Based on this information, we candetermine that the
charge of at least one of B or C must be of type_______________.

To determine the order of contacts we must start from the lastcontact and work our way to the first contact. It is important tonote that because we have no initial charge state information forspheres B and C that we have the ability to make an arbitrarydecision about the initial charge state of these two spheres. Inother words, the charge states of sphere B and C areinterchangeable. Third and last Contact: Because spheres ________and _______ have the same charge we can determine that they were______ in contact. If we look at spheres B and C as the system, wefind that the total charge of the sub system consisting of B and Cwas ______________ of type _________.

Second contact: We can safely assume that A touched either B or Cprior to B and C
being brought into contact. Here we can make the arbitrary choicethat B touched A in the second contact. If this is the case, weknow that the charge of B ___________ it touched C must have been______________ of type __________ because it must have the sameamount and type of charge as the final state of _______. Therefore,at this instant we know that the charge on sphere C was________________ of type ____________________ it touched B.

First contact: Now we have an interesting situation. We find thatthe charge state of
sphere C would be consistent with sphere C being initially____________ and being
placed in contact with _______________ since the charge state of Cis exactly
__________ that of ____________ initially. This would mean that thecharge state of
sphere A after contact with ______ would be _____________ of type__________.
However, we already determined that the __________ charge of thesystem containing sphere _______ and sphere _______ in the secondcontact was ____________ of type __________. The only way this ispossible is if sphere B has a charge of __________ of type____________.

Final Results
The initial charge state of sphere Ais:_________________________________________
The initial charge state of sphere Bis:_________________________________________
The initial charge state of sphere Cis:_________________________________________
In the first contact of sphere ___________ to sphere_________________ how many
electrons were transferred from one sphere to the other?
In the second contact of sphere ___________ to sphere_________________ how many
electrons were transferred from one sphere to the other?
In the third contact of sphere ___________ to sphere_________________ how many
electrons were transferred from one sphere to the other?

25) A negative magnification for a mirror means that

A) the image is upright, and the mirror could be either concave or convex.

B) the image is inverted, and the mirror is concave.

C) the image is inverted, and the mirror could be either concave or convex.

D) the image is upright, and the mirror is convex

E) the image is inverted and the mirror is convex.

26) An object is placed in front of a thin lens, Which statements are correct in describing the image formed by the lens? (There could be more than one correct choice.)

A) If the lens is convex, the image must be real.

B) If the image is real, then it is also inverted.

C) If the image is real, then it is also upright.

D) If the lens is convex, the image will never be virtual.

E) If the lens is concave, the image must be virtual.

27) When a beam of light, originally travelling in air, enters a piece of glass having an index of refraction of 3/2, its frequency

A) is unaffected

B) is reduced to 2/3 its original value.

C) increased by a factor of 3/2.

28) The index of refraction of a type of glass is 1.50, and the index of refraction of water is 1.33. If the light enters water from the glass, the angle of refraction will be

A) equal to the angle of incidence.

B) less than the angle of incidence.

C) greater than the angle of incidence.

29) Which of the following terms describe lenses that are thinner at the center than the edges? (there could be more than one correct choice.)

A) concave lenses

B) converging lenses

C) diverging lenses

D) convex lenses

30) You may have seen ambulances on the street with the letters of the word AMBULANCE written on the front of them, in such a way to appear correctly when viewed in your car's rear-view mirror. (See the figure.) How do the letters appear when you look directly at the ambulance (not through the mirror)?

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PHI 1101 Lecture Notes - Blue Cheese, Rahu, Snakebite

PHI 1101 Full Course Notes

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