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  1. K

    How much does the temperature of a river rise in going over 30 m?

    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...
  2. K

    How much ice melts in water?

    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...
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