- #1
gizzard
- 4
- 0
Hello,
Can someone help me with this problem:
An ice sheet forms on a lake. The air above the sheet is -15 degrees C and the water is 0 degrees C. Assume that the heat of fusion of water freezing on the lower surface is conducted through the sheet to the air above. How much time will it take to form a sheet of ice 25 cm thick?
I believe that I can "legally" convert cm of water to grams of water. Therefore 25 grams.
I assume that I
will find time through the eqn: (change in time) = Q/H.
and find H through the eqn: H kA(change in temp.)/(thickness)
and find Q through the eqn: (heat of fusion)(mass)
Can someone help me with this problem:
An ice sheet forms on a lake. The air above the sheet is -15 degrees C and the water is 0 degrees C. Assume that the heat of fusion of water freezing on the lower surface is conducted through the sheet to the air above. How much time will it take to form a sheet of ice 25 cm thick?
I believe that I can "legally" convert cm of water to grams of water. Therefore 25 grams.
I assume that I
will find time through the eqn: (change in time) = Q/H.
and find H through the eqn: H kA(change in temp.)/(thickness)
and find Q through the eqn: (heat of fusion)(mass)