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Author Question: Planetary orbits are a. parabolas c. circles b. ellipses d. none of the ... (Read 81 times)

809779

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on: Jul 28, 2018
Planetary orbits are
 a. parabolas c. circles
  b. ellipses d. none of the above.

Question 2

What is a curie?
 a. The unit of speed of radioactive decay.
  b. The same unit as an alpha particle or a helium nucleus.
  c. The half-life of an isotope expressed as a rate instead of a time (i.e., per second instead of seconds).
  d. The unit that measures the number of decays in each unit of time that are occurring in a sample.
  e. The unit of momentum of a radioactive particle.


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kaillie

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

d


809779

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

Liddy

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

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