The history of theuniverse.

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Chapter 22, Problem 43EAP

To determine

The history of theuniverse.

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Read the Blitzer Bonus attached herewith. The future is now: You have the opportunity to explore the cosmos in a starship traveling near the speed of light. The experience will enable you to understand the mysteries of the universe in deeply personal ways, transporting you to unimagined levels of knowing and being. The downside: You return from your two-year journey to a futuristic world in which friends and loved ones are long gone. Do you explore space or stay here on Earth? What are the reasons for your choice?

limits of what the universe can do. moves around within a system, whether an atom, a hurricane or a black hole. The first law describes Thermodynamics is the study of heat and energy. At its heart are laws that describe how energy atter reading. how energy cannot be created or destroyed, merely transformed from one kind to another. The second law, however, is probably better known and even more profound because it describes the The second law can be expressed in several ways, the simplest being that heat will naturally flow n a hotter to a colder body. At its heart is a property of thermodynamic systems called entropy "in the equations above it is represented by "S"- in loose terms, a measure of the amount of disorder within a system. This can be represented in many ways, for example in the arrangement of the molecules- water molecules in an ice cube are more ordered than the same molecules after they have been heated into a gas. Whereas the water molecules were in a well-defined…

Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy 2. In this case, A. Galaxy 1 must be twice as big as Galaxy 2. B. we are seeing Galaxy 1 as it looked at an earlier time in the history of the universe than Galaxy 2. C. we are seeing Galaxy 1 as it looked at a later time in the history of the universe than Galaxy 2. D. Galaxy 2 must be twice as old as Galaxy 1.