A source emits sound at a fixed constant frequency f. If the source moves away from you, the frequency you hear is
a. the same as f c. lower than f
b. higher than f d. unrelated to f
C
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List the six main regions of the Earth, in order, starting from the center
What will be an ideal response?
What is interesting about Jupiter's rotation period?
A) It is the same as Earth's. B) It is the same as its orbital period. C) It is the same as the Sun's. D) It is the slowest in the solar system. E) It is the fastest in the solar system.
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.
What is pair production? Choose the best answer.
A) Energy turns into a particle and its corresponding antiparticle. B) Energy turns into two copies of identical particles. C) A particle splits into two completely different particles. D) Two antimatter particles turn into ordinary matter. E) A particle splits into two copies of itself.