Kepler's analysis of planetary motion showed that the planets move _______________ when close to the Sun and _______________ when farther away
Fill in the blank(s) with correct word
faster; slower
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Use the Gibbs phase rule
The radiation emitted from a star has a maximum intensity at a wavelength of 300 nm. What is the temperature of this star?
a. 300 K b. 100 K c. 900,000,000 K d. 90,000 K e. 10,000 K
Blue light differs from red light in that
a. blue light has a higher energy than red light. b. blue light has a lower energy than red light. c. blue light has a shorter wavelength than red light. d. blue light has a longer wavelength than red light. e. More than one of the other choices are correct.
A parallel plate capacitor is connected to a battery and charged to voltage V. Leah says that the charge on the plates will decrease if the distance between the plates is increased while they are still connected to the battery. Gertie says that the charge will remain the same. Which one, if either, is correct, and why?
A. Gertie, because the maximum voltage is determined by the battery. B. Gertie, because the capacitance of the capacitor does not change. C. Leah, because the capacitance decreases when the plate separation is increased. D. Leah, because the capacitance increases when the plate separation is increased. E. Neither, because the charge increases when the plate separation is increased.