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Author Question: One of the four main themes or story lines that will keep appearing throughout this course is A) ... (Read 41 times)

tfester

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on: Jul 29, 2018
One of the four main themes or story lines that will keep appearing throughout this course is
 
  A) contrasts and comparisons between Newtonian and contemporary physics.
  B) understanding the structure and origin of our planet and of life on Earth.
  C) how to solve simple numerical physics problems
  D) solving the problem of nuclear war.
  E) understanding how household appliances and other familiar technological gadgets work.

Question 2

A meteoroid, heading straight for Earth, has a speed of 14.8 km/s relative to the center of Earth as it crosses our moon's orbit, a distance of 3.84  108 m from the earth's center.
 
  What is the meteroid's speed as it hits the earth? You can neglect the effects of the moon, Earth's atmosphere, and any motion of the earth. (G = 6.67  10-11 N  m2/kg2, Mearth = 5.97  1024 kg) A) 18.5 km/s
  B) 21.5 km/s
  C) 32.4 km/s
  D) 87.3 km/s


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popopong

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


tfester

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Reply 2 on: Jul 29, 2018
:D TYSM

ghepp

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Reply 3 on: Yesterday
Wow, this really help

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