1.

Compare the pressure exerted by a sharp needle on a surface and the pressure exerted by a blunt needle.

A.  The pressure exerted by a sharp needle is more.  
B.  The pressure exerted by a blunt needle is less.
C.  The pressure exerted by both is equal.
D.  It cannot be determined.
Answer» B.  The pressure exerted by a blunt needle is less.


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