Solved: 9. (10%) If a homeowner with an R 4.0 house paid $350/month for his na

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9 10 if a homeowner with an r 40 house paid 350month for his natural g

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9. (10%) If a homeowner with an R 4.0 house paid $350/month for his natural gas bill and the house next door had an R 14.0 house of the same area, what would you expect for the natural gas bill for the R 14.0 house?

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Question 36808

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44. Describe what is a natural frequency of a system? (3%)

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B. Label the three damping scenarios for a SDOF system: (3%)

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What is the equation of motion for a dynamic system best described as: (1%)
a) A homogeneous second order differential equation.
b) A time dependent algebraic equation.
c) A trigonometric transcendental equation.

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List Newton's Laws. (3%)
Newton's Third Law:
Newton's Second Law:
Newton's First Law:

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What is the equation of motion for a SDOF free vibration system? Define each term in the equation. (3%)

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). Define the power coefficient for a wind turbine system: (3%)

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Comparing VAWT and HAWAT, which one causes more obstruction to birds?

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7. Comparing VAWT and HAWT, which one sways less? (1%)

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6. Name the following two vertical wind turbine systems: (2%)