Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
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Category > Management Posted 13 Jan 2018 My Price 5.00

melting of ice

It has been suggested that the surface melting of ice plays a role in enabling speed skaters to achieve peak performance. Carry out the following calculation to test this hypothesis. At 1 atm pressure, ice melts at 273.15 K,  the density of ice is 920. kg m-3, and the density of liquid water is 997. kg m-3.

a. What pressure is required to lower the melting temperature by 4.0°C?

b. Assume that the width of the skate in contact with the ice has been reduced by sharpening to 19X10-3

c. What is the melting point of ice under this pressure?

d. If the temperature of the ice is -40°C, do you expect melting of the ice at the ice-skate interface to occur?

 

Answers

Maurice Tutor
(5)
Status NEW Posted 13 Jan 2018 10:01 PM My Price 5.00

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