a medieval prince trapped in a castle wraps a message around a rock and throws it from the top of the castle wall with an initial velocity of 12 m/s [42 above horizontal ]. the rock lands just on the far side of castle's moat , at a level 9.5 m below the initial level. determine the amount of time it takes the rock

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The fertilized egg  begins to develop into a hollow ball of cells called the blastocyst. 

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips.