a. When the density is higher, the speed of sound is lower.
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His confidence is a reflection of his "Self-efficacy".
Self-efficacy is characterized as an individual judgment of "how well one can execute strategies required to manage planned situations". Expectations of Self-efficacy decide if an individual will have the capacity to show adapting conduct and to what extent exertion will be supported despite obstacles. Individuals who have high Self-efficacy will apply adequate exertion that, if first rate, prompts effective results, though those with low Self-efficacy are probably going to stop exertion early and fail.
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Government. The Spartan political system was unusual in that it had two hereditary kings from two separate families. These monarchs were particularly powerful when one of them led the army on campaign. The kings were also priests of Zeus and they sat on the council of elders known as the gerousia
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