Subject | Science |

Due By (Pacific Time) | 12/14/2016 04:00 am |

Could you answer 3 questions below? (in 6hrs)

If you find yourself stuck on these remember these "hints" to help you get started:

For the 1st: speed=distance/time -> so time = distance/speed

For the 2nd and 3rd: The half life is discussed in the slides. Remember the definition of a half life- after one half life you have half of your original sample back. So after two half lives you have (1/2)*(1/2)=(1/4) of your sample left. After 3 half lives you have (1/2)*(1/2)*(1/2) of your sample left. In general, after n half lives your fraction of your original sample is (1/2)^n.

I hope this helps.

**1) Assume you wanted to have a discussion with a civilization located near the center of the Milky Way Galaxy. What would be the minimum time between sending the signal and receiving a reply? ****Hint. we live about 2.5x10^20 meters from the center of the galaxy.**

Tutor | Rating |
---|---|

pallavi |
out of 1971 reviews |

amosmm |
out of 766 reviews |

PhyzKyd |
out of 1164 reviews |

rajdeep77 |
out of 721 reviews |

sctys |
out of 1600 reviews |

sharadgreen |
out of 770 reviews |

topnotcher |
out of 766 reviews |

XXXIAO |
out of 680 reviews |