Chapter 34: Q28CQ (page 1237)
Discuss whether you think there are limits to what humans can understand about the laws of physics. Support your arguments.
Short Answer
In terms of what humans can grasp, the laws of physics have no bounds.
Chapter 34: Q28CQ (page 1237)
Discuss whether you think there are limits to what humans can understand about the laws of physics. Support your arguments.
In terms of what humans can grasp, the laws of physics have no bounds.
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Get started for freeOn average, how far away are galaxies that are moving away from us at\({\rm{2}}{\rm{.0 \% }}\)of the speed of light?
Consider a supermassive black hole near the center of a galaxy. Calculate the radius of such an object based on its mass. You must consider how much mass is reasonable for these large objects, and which is now nearly directly observed. (Information on black holes posted on the Web by NASA and other agencies is reliable, for example.)
Find the approximate mass of the dark and luminous matter in the Milky Way galaxy. Assume the luminous matter is due to approximately \({\rm{1}}{{\rm{0}}^{{\rm{11}}}}\) stars of average mass \({\rm{1}}{\rm{.5}}\) times that of our Sun, and take the dark matter to be \({\rm{10}}\) times as massive as the luminous matter.
Distances to the nearest stars (up to\({\rm{500 ly}}\)away) can be measured by a technique called parallax, as shown in Figure\({\rm{34}}{\rm{.26}}\). What are the angles\({{\rm{\theta }}_{\rm{1}}}\)and\({{\rm{\theta }}_{\rm{2}}}\)relative to the plane of the Earth’s orbit for a star\({\rm{4}}{\rm{.0 ly}}\)directly above the Sun?
If neutrino oscillations do occur, will they violate conservation of the various lepton family numbers (\({{\rm{L}}_{\rm{e}}}\),\({{\rm{L}}_{\rm{\mu }}}\), and \({{\rm{L}}_{\rm{T}}}\))? Will neutrino oscillations violate conservation of the total number of leptons?
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