The experiments of what person first clearly demonstrated the wave nature of light?
A) Maxwell
B) Galileo
C) Newton
D) Young
E) Einstein
D
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The tides on Earth are an example of
A) Newton's first law of motion. B) Newton's second law of motion. C) Newton's third law of motion. D) the universal law of gravitation. E) none of the above
Visitors typically scan webpage text for information rather than read the text word for word.
Answer the following statement true (T) or false (F)
For each of the original chemical compositions and temperatures at 1 atmosphere of pressure for the aluminum (Al)-nickel (Ni) alloys (see Figure 5.15) listed below, give the following:
1. The phases present.
2. From the Gibbs phase rule, determine the degrees of freedom in the material. Can the composition of the phases or phases present be adjusted by changing the original chemical composition?
3. The chemical composition of each phase.
4. The atom fraction of each phase.
The temperature of the Sun's core is about 20,000 K
Indicate whether the statement is true or false