Answers created by Nicolas

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• Question #58ffa
  
• An 81 kg football player moving 6.5 m/s tackles and collides with a stationary 140 kg football player. What speed will the football players have in the moment after impact?
  
• Question #eeed8
  
• What is the transfer of heat causing differences in air density?
  
• A charge of #12 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #70 J# to #34 J#, what is the voltage between points A and B?
  
• Question #51140
  
• Question #009ad
  
• If a rocket of mass 117 kg is launched with a velocity of 800 m/s, how high does it rise?
  
• A 5.82-kg piece of copper metal is heated from 21.5°C to 328.3°C. What is the heat absorbed (in kJ) by the metal?
  
• How do you solve #y=3x-9# and #2y-6x=-18# using substitution?
  
• Question #4d1a6
  
• If #f(x) = 6x-4#, what is #f^-1(x)#?
  
• What are some advantages and disadvantages of a hypothetical "flashlight" that would emit x-rays instead of visible light?