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HW 13 – Report

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HW 13 – Report

General

Total number of students 41 Number of submitted HW 40 Number of not submitted HW 1 Number of problems 6+1 Average grade (w/o bonus) 86.32 Standard deviation of grades 13.19 Undergraduate (w/ bonus)

Average grade 90.17

Standard deviation of grades 15.57 Graduate

Average grade 84.71

Standard deviation of grades 14.42

Individual problem breakdown

Problem 8.15 8.29 8.37 8.44 8.48 8.75 C8.4*

Average grade 6.85 9.91 9.09 6.90 9.69 9.46 8.77 Standard deviation of grades 2.99 0.34 1.96 2.81 1.58 2.20 2.84

*Based on the number of students who attempted to solve the problem

Grade distribution

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Grade history

Submission history

Comments

• Many students did not apply potential vortex theory to find the radius of maximum

velocity (P8.15).

• Few students did not solve part (b) of P8.37.

• Many students used wrong data in P8.44. Specifically, calculating the velocity in

P8.43 was required by the statement of P8.44; students instead, assumed a value for that and also used the wrong pressure.

• Some students did not calculate the lift (P8.44).

• 22% of undergraduate students attempted to solve the comprehensive problem.

Références

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