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Chapter 6: Q13DQ (page 1401)
Why do the transition elements all have similar chemical properties?
Because all the transition elements have same valence electron in the orbit.
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Why do you think the development of Newtonian mechanics preceded the more refined relativistic mechanics by so many years?
In a photoelectric-effect experiment, the photocurrent ifor large positive values of has the same value no matter whatthe light frequency f(provided that f is higher than the thresholdfrequency f0). Explain why.
Why are materials that are good thermal conductors also good electrical conductors? What kinds of problems does this pose for the design of appliances such as clothes irons and electric heaters? Are there materials that do not follow this general rule?
An electron with a total energy of collides with a stationary positron. (a) What is the available energy? (b) If the electron and positron are accelerated in a collider, what total energy corresponds to the same available energy as in part (a)?
The speed of light relative to still water is .If the water is moving past us, the speed of light we measure depends on the speed of the water. Do these facts violate Einstein’s second postulate? Explain.
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