## Homework 4

DUE Tue. Apr. 3

at the *beginning* of class

Homeworks turned in after lecture has begun will be
considered late.
All problems are from the text,
*Universe*
(7th edition) by
Freedman & Kaufmann, except #8.

# |
Chapter | Question |

1. | 20 | 29 |

2. | 20 | 33 |

3. | 20 | 39 |

4. | 25 | 33 |

5. | 25 | 36 |

6. | 25 | 39 |

7. | 25 | 41 |

8. | ***see below*** |

X^{*} |
25 | 49 |

8. Suppose you have a space ship that can travel at 0.999 times the
speed of light. Should you wish to visit Canopus (313 light-years distant),
how much will you age on the way there?

* Extra credit.

Be sure to show your work. A simple "Yes" does not constitute a complete
answer. You must write in complete sentences and show all mathematical
computations to receive full credit. Your homework must be legible for
us to grade it - please be neat!