Calculate natural frequency and driving frequency of system
An airplane wing modeled as a spring-mass system with natural frequency 40 Hz is driven harmonically by the rotation of its engines at 39.9 Hz. Calculate the natural frequency and the driving frequency of the system.
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Cardon's Boat Yard, Inc., repairs, stores, and cleans boats for customers. It is completing the accounting process for the year just ended, November 30, 2012.
Hunt Company is considering purchasing a competing company in order to expand its market share. Estimates of the excess of the value of the individual assets, less liabilities to be assumed, range from $50,000 to $60,000.
The volume of the air slowly decreases to 0.002 m3 in a quasi-equilibrium process as the specific internal energy of the air decreases by 260 kJ/kg. Neglecting friction between the piston and the cylinder wall, determine the heat transfer to the a
Potholes occur on a major city's streets at a rate of 4.2 per mile. What is the probability that a quarter-mile stretch has more than one pothole?
How long does it take the blue ball to reach its maximum height? What is the maximum height the blue ball reaches?
February 19 - A building in California was destroyed by a tornado. The building had a cost of $100,000, Accumulated Depreciation of $40,000, and insurance proceeds from the destruction were $50,000.
Let Y1 and Y2 be uncorrelated random variables. Consider U1 = Y1 + Y2 and U2 = Y1-Y2. Find the covariance between U1 and U2 in terms of the variance of Y1 and Y2
Identical point charges of +1.3 oC are fixed to diagonally opposite corners of a square. A third charge is then fixed at the center of the square, such that it causes the potentials at the empty corners to change signs without changing magnitudes.
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