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What is the temperature increase
of water per kilogram at the bottom of a 145 m waterfall if all of the
initial potential energy is transferred by heat to the water?
(g = 9.81 m/s^2 and c p = 4186 J/kg•°C)
A 0.2 kg mass of metal with a
specific heat capacity of 1.26 × 103 J/kg•°C and an initial temperature
of 90°C is placed in a 500 g calorimeter at an initial temperature of
20°C with a specific heat capacity of 4.19 × 102 J/kg•°C. The
calorimeter is filled with 0.1 kg of water with an initial temperature
of 20°C. When the combination of the metal, the calorimeter, and the
water reaches equilibrium, what is the final temperature?
Find the final equilibrium
temperature when 10.0 g of milk at 10.0°C is added to 1.60 × 102g of
coffee with a temperature of 90.0°C. Assume the specific heats of coffee
and milk are the same as for water (cw = 4.19 J/g•°C), and disregard
the heat capacity of the container.
A 1.0 kg cube of ice is dropped
into 1.0 kg of water, and when equilibrium is reached, there are 2.0 kg
of ice at 0.0° C. The initial temperature of the water was 0°C. What was
the original temperature of the ice? (cw = 4186 J/kg•°C, ci = 2093
J/kg•°C, and Lf = 3.3 × 105 J/kg)
A slice of bread contains about
4.19 x 10^5 J of energy. If the specific heat capacity of 4.19 x 10^3
J/kg•°C, by how many degrees Celsius would the temperature of a 70.0 kg
person increase if all the energy in the bread were converted to heat?