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Author Question: Matthew pulls his little sister Sarah in a sled on an icy surface (assume no friction), with a force ... (Read 84 times)

crobinson2013

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on: Jul 27, 2018
Matthew pulls his little sister Sarah in a sled on an icy surface (assume no friction), with a force of 60.0 Newtons at an angle of 37.0 upward from the horizontal. If he pulls her a distance of 12.0 m, the work he does is
 
  A) 0.333 kJ
  B) 720 J
  C) 575 J
  D) 433 J
  E) 185 J

Question 2

Stars much less luminous than the Sun have
 
  A) wider habitable zones, increasing the odds of finding habitable planets and much longer lifetimes allowing life to appear and evolve
  B) wider habitable zones, increasing the odds of finding habitable planets but lifetimes too short for life to appear
  C) narrower habitable zones, decreasing the odds of finding habitable planets and lifetimes too short for life to appear
  D) narrower habitable zones, decreasing the odds of finding habitable planets but much longer lifetimes allowing life to appear and evolve


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angrybirds13579

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

C

Answer to Question 2

D


crobinson2013

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Reply 2 on: Jul 27, 2018
Gracias!

Joy Chen

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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