Homework Statement
Assuming no heat is transferred to or from the surroundings, how much does the temperature of a river rise in going over a 30 m falls? (assume the velocity of the water is the same above and below the falls)
Homework Equations
Δl = αlΔT
The Attempt at a Solution
H = 0 and...
gneill: Ok, so the formula that pertains to that phase is ΔQ = Lm. I know that L is the latent heat of fusion for water so it is 333 kJ/kg. Would the change in heat be the 3.38 kJ?
Chestermiller: I found the change in heat for the lemonade form 20-0 °C to be 83.38 kJ.
Homework Statement
Ice at 0°C is added to a 1 kg of lemonade cooling it from 20°C to 0°C. How much ice melts? (The heat capacity of lemonade equals that of water.)
Homework Equations
Q = mcΔT
The Attempt at a Solution
Found the heat in of the lemonade to the ice... = 83.38 kJ and don't...