Questions asked by MetaPhysik

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• Which ruler has the most energy? Why? Assume all rulers are identical. (a) A ruler at rest (b) A ruler flying across the room (c ) A bent ruler at rest (d) A bent ruler (tied by a string to form a bow) flying across the room.
  
• What would happen to the earth if both the sun and the moon were to disappear instantly?
  
• How to integrate #intx/sinxdx#?
  
• #int_(-a)^adx/((a^2+x^2)sqrt((2a^2+x^2)))=?#
  
• How is solid angle related to electric field according to Gauss's Law?
  
• A half immersed sphere with radius R and relative density 0.5 is in equilibrium with water. The sphere is pushed down lightly into the water and released. What's the oscillatory frequency of the sphere? Density of water is #1.0 g//cm^3#.