PHIL 279 Lecture 4: L2.pdf

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emeraldhare177

10 Dec 2014

School

University of Calgary

Department

Philosophy

Course

PHIL 279

Professor

Ali Akhtar Kazmi

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Document Summary

Note: there can be n place predicate in a sentence of l2. To specify an interpretation, i, of a set of sentences s: Specify a non-empty set, d, as the domain of i. Specify extension of each name in s, which will be a member of d (extension of name must be member of domain) Specify the extension of each sentence letter, which will be one of the two truth values. Specify extension of each one-place predicate in s, which will be a subset of d. Specify the extension of each two-place predicate in s, which will be a subset of the set of ordered pairs of members of d. A sentence letter is true in an interpretation i i its extension in i is t. An atomic sentence f is true in i i < i P : is a philosopher a : alma.

Related Questions

The Saturn V, developed at NASA Marshall Space Flight Center (MSFC) under the direction of Wernher Von Braun, was the largest in a family of liquid-propellant rockets that solved the problem of getting to the moon. A total of thirty-two (32) Saturns of all types were launched, not one failed. The three stage Saturn V was taller than a 36 story building and was the largest, most powerful rocket ever launched. Fully loaded with the Apollo spacecraft onboard, it had a mass of 6.8 million pounds. This was still no match; however, for the five powerful rockets that controlled the first stage with 33,560,000 newtons of thrust upwards. Using this information find the net acceleration (m/s2) of the Saturn V rocket. Assume that there is no change in mass,the rocket stays completely perpendicular, and there is no drag on the rocket. This takes place on planet earth with g=9.8 m/s^2.

This is my Physics project, can you explain the Physics behindit?

3. Fashion a cardboard tube covered at each end with

metal foil. Punch a hole in each end with a pencil,
one about 3 or so millimeters in diameter and the
other twice as big. Place your eye to the small hole
and look through the tube at the colors of things
against the black background of the tube. You'll see
colors that look very different from how they appear

against ordinary backgrounds.

This is from Conceptual Physics, Hewitt 10th edition. Myoriginal thought was that since there is no light, the object willnot reflect anything appearing black, but the last sentence saysotherwise.

This is my Physics project, can you explain the Physics behindit?

3. Fashion a cardboard tube covered at each end with
metal foil. Punch a hole in each end with a pencil,
one about 3 or so millimeters in diameter and the
other twice as big. Place your eye to the small hole
and look through the tube at the colors of things
against the black background of the tube. You'll see
colors that look very different from how they appear
against ordinary backgrounds.

This is from Conceptual Physics, Hewitt 10th edition. My originalthought was that since there is no light, the object will notreflect anything appearing black, but the last sentence saysotherwise.

Thank you!

PHIL 279 Lecture 4: L2.pdf

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