Answers edited by Chaven Y.

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• A balanced lever has two weights on it, the first with mass #1 kg # and the second with mass #9 kg#. If the first weight is # 3 m# from the fulcrum, how far is the second weight from the fulcrum?
  
• How far can modern telescopes see?
  
• An object with a mass of #40 g# is dropped into #660 mL# of water at #0^@C#. If the object cools by #72 ^@C# and the water warms by #3 ^@C#, what is the specific heat of the material that the object is made of?
  
• What are the sizes of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto?
  
• A sign with a mass of 4.53 kg is being hung symmetrically by two cables which make an angle of 27.8° with the horizontal. How do you determine the tension in one of the cables?
  
• What are the causes of anti-social behavior?
  
• What is the name of the most important star in the milky way?
  
• A projectile is shot at a velocity of # 35 m/s# and an angle of #pi/6 #. What is the projectile's peak height?
  
• What is the distance from ground level to outer space?
  
• Question #19f91
  
• How do you simplify #sqrt 8 /( 2 sqrt3)#?