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Author Question: Michael and Misty are standing motionless together on the ice at the center of a very slippery ... (Read 50 times)

soccerdreamer_17

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on: Jul 27, 2018
Michael and Misty are standing motionless together on the ice at the center of a very slippery frozen pond. Michael (mass 75. kg) pushes Misty (46. kg), giving her an acceleration of 1.8 m/s2 for 0.17 s while they were in contact.
 
  (a) What is Michael's acceleration?
  (b) Who exerts the greater force on the other?
  (c) What is Michael's speed relative to Misty?

Question 2

Which of the following methods allows us to determine the size of an extrasolar planet around another star?
 
  A) detection of brightness changes in a star as a planet passes in front of it
  B) detection of reflected starlight
  C) regular changes in the positions of the parent stars with respect to more distant stars as they move across the sky
  D) detection of Doppler shifts in the spectra of the parent stars


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cclemon1

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Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 1.1 m/s2
(b) neither
(c) 0.49 m/s

Answer to Question 2

A


soccerdreamer_17

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Reply 2 on: Jul 27, 2018
:D TYSM

jamesnevil303

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

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