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Author Question: Which of the following is an example in which you are traveling at constant speed but not at ... (Read 34 times)

skymedlock

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Which of the following is an example in which you are traveling at constant speed but not at constant velocity?
 
  A) rolling freely down a hill in a cart, traveling in a straight line
  B) driving backward at exactly 50 km/hr
  C) driving around in a circle at exactly 100 km/hr
  D) jumping up and down, with a period of exactly 60 hops per minute
  E) none of the above

Question 2

What is a Cepheid variable?
 
  A) It is a bright source of variable X-ray emission, thought to harbor a supermassive black hole.
  B) It is a type of very luminous star that makes an excellent standard candle.
  C) It is a main-sequence star of spectral type B5.
  D) It is a type of galaxy that varies in its light output.


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dudman123

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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skymedlock

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)


Jsherida

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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