Solve the following Represent the process on a P-V graph. Did the atmosphere do positive, negative...

Solve the following

Represent the process on a P-V graph.
Did the atmosphere do positive, negative or zero work on the system? How do you know?
Was the energy supplied to the system through heating positive, negative or zero? How do you know?
Was the internal energy change of the system positive, negative or zero? How do you know?
Represent the process with an energy bar chart.
Ideal Gas in a container with a movable piston at room temperature was put into a hot water container. The gas expanded moving the piston. The gas is our system.

7) You add 25 g of milk at 10^o C to 200 g of coffee (essentially water) at 70^o C. The coffee is in a Styrofoam cup. If the specific heat of milk is 3800 J/kg*^oC, by how much will the coffee temperature decrease when the milk is added? Indicate any assumptions you made. The specific heat of water is 4180 J/kg*^oC,

8) The kayak of a 70-kg man tips and he falls into a cold stream. When he is rescued from the cold water, his body temperature is 33 °C (91.4 °F). He is placed in 50 kg of warm bath water at temperature 41 °C (105.8 °F). What is the final temperature of the man and the water?

Expert Solution

genius_generous answered 3 years ago

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Do you think that there are any other good ways to maintain a positive classroom atmosphere?

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