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MBA.Graduate Psychology,PHD in HRM
Strayer,Phoniex,
Feb-1999 - Mar-2006
MBA.Graduate Psychology,PHD in HRM
Strayer,Phoniex,University of California
Feb-1999 - Mar-2006
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LSGH LLC
Apr-2003 - Apr-2007
It has been argued that skaters slide easily on ice because the pressure of the skater’s bladecreates a thin film of liquid water. The temperature of indoor ice rinks is typically at T = -7 C.What is the required mass in kg and lbm of the skater to melt the ice at this temperature? Does itseem reasonable that a thin film of water is created by the skater’s blade? You can use a bladethickness of 1.5 mm (~1/16 inch) and a length of 150 mm (~ 6 inches). Molar volume of liquidwater (near 0 C) is 1.802 x 10‐5 m3 mol‐1 and ice (near 0 C) is 1.965 x 10‐5 m3 mol‐1. You can usea constant enthalpy of fusion (melting) of 6.01 kJ mol‐1. You can assume that the normalmelting point of water is 0 C at 101.325 kPa. The slope of the solid-liquid saturation curve ofwater is negative for temperatures near the normal melting point.
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