1.

Skating on ice is possible becauseA) the surface of ice is smoothB) ice is coldC) the pressure on the ice dueto skate melts the ice by loweringits melting point forming a thinfilm of waterD) the pressure on the ice due toskate raises its melting point

Answer»

C) the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water



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