Light hits ocean water during a storm with violent waves at an angle of 43° off normal to the water. Its angle of reflection must be:
A)there is no way to tell
B)430
C)470
D)137°

Velocity=total displacement/timefrom house to store is 500 from store to neighbor is 200 therefore total displacement=500+200=700metrestherefore,700metres/910seconds=0.8metres per second

Since the pully is a simple machine so the mechanical advantage is a 1

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. 

Answercarbon< supernova