2. A 250-kg crate is initially moving at 20 m/s over a rough horizontal surface that exerts a frictional force of 16 N for 11 meters. The crate then enters a smooth region (there is no more friction) such that it goes up a hill. How high up does the crate go up the hill before it stops?

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Chapter22: Heat Engines, Entropy, And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 22.28P
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2. A 250-kg crate is initially moving at 20 m/s over a rough horizontal surface that exerts a
frictional force of 16 N for 11 meters. The crate then enters a smooth region (there is no more
friction) such that it goes up a hill. How high up does the crate go up the hill before it stops?
System/Flow
E, E,
E, E,
Position A
Position B
Energy (J)
Energy (J)
Transcribed Image Text:2. A 250-kg crate is initially moving at 20 m/s over a rough horizontal surface that exerts a frictional force of 16 N for 11 meters. The crate then enters a smooth region (there is no more friction) such that it goes up a hill. How high up does the crate go up the hill before it stops? System/Flow E, E, E, E, Position A Position B Energy (J) Energy (J)
For each of the following situations:
a. Choose an initial and final state (states A and B) that will be appropriate (interesting) for
analysis.
b. If there is not already a physical diagram of the situation and there should be one for proper
analysis, include one.
c. Construct a system schema of the situation. Do not forget to include the system boundary for
the system specified by the problem. Choose your system wisely.
d. Construct an energy bar chart and system flow diagram (LOL plots) for each problem.
e. You are allowed to add other energy storage modes. You do not have to use the energy
storage modes that are printed in each LOL plot.
f. Find the unknown value.
Transcribed Image Text:For each of the following situations: a. Choose an initial and final state (states A and B) that will be appropriate (interesting) for analysis. b. If there is not already a physical diagram of the situation and there should be one for proper analysis, include one. c. Construct a system schema of the situation. Do not forget to include the system boundary for the system specified by the problem. Choose your system wisely. d. Construct an energy bar chart and system flow diagram (LOL plots) for each problem. e. You are allowed to add other energy storage modes. You do not have to use the energy storage modes that are printed in each LOL plot. f. Find the unknown value.
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