At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W
If this energy transfer has to be made up by an equivalent food intake, how many kilocalories (food calories) does this person need to consume every day just to make up this energy? (1 cal = 4.186 J) A) 1000 kcal
B) 1100 kcal
C) 1300 kcal
D) 1500 kcal
E) 1600 kcal
C
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Which of the following is not expected to provide solid-solution strengthening?
(a) A large substitutional atom in the tensile strain region of an edge dislocation. (b) A small substitutional atom in the compressive strain region of an edge dislocation. (c) A small interstitial atom in the compressive strain region of an edge dislocation. (d) A small interstitial atom in the tensile region of an edge dislocation.
A white dwarf stops collapsing and forms a stable structure due to forces arising from ____
a. rapid rotation b. magnetic fields c. gas pressure d. neutron degeneracy e. electron degeneracy
What do we mean by the "geological record"?
A) rocks from earlier periods of the Earth's history B) samples of meteorites that fell to Earth early in its history C) remains of ancient organisms preserved in rocks D) an album by the Rolling Stones
Exhibit 17-2
The figure below shows a sine wave on a string at one instant of time.
?
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Use this exhibit to answer the following question(s).
Refer to . Which of the graphs below shows a wave where the frequency and wave velocity are both doubled?
a.
