Numerade

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a. A batch of 20 parts contains four defects. If two parts are drawn randomly one at a time without replacement, what is the probability that both parts are defective?that but parts aredetectivered with replacement whatis the probablity that both parts are defective?

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? systems consider the reverse flow of products, their reuse, and the marketing and distribution of recovered products. closed-loop eco-loop open-loop retro-movement

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Applying the concepts of aggregate demand and aggregate supply model, determine the impact on GDP and prices of each of the following events.

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A corporation issues 25,000 shares of $50 par value preferred stock for cash at $125 per share. The entry to record the transaction will include a O credit to Preferred Stock for $2,000,000 and a credit to Paid-in Capital in Excess of Par Value for $1,125,000. O credit to Preferred Stock for $1,875,000 and a credit to Retained Earnings for $1,250,000. credit to Preferred Stock for $3,125,000. credit to Retained Earnings for $3,125,000. O credit to Preferred Stock for $1,250,000 and a credit to Paid-in Capital in Excess of Par Value for $1,875,000.

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A small business office uses 809 pieces of paper every 2 days. Which is a reasonable estimate for the pieces of paper the business office uses in 7 days? A. 1,600 B. 2,800 C. 1,800 D. 6,300 Reset Next Question

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Consider a coaxial cable of length L, with the inner wire consisting of a thin conducting tube of radius R, and the outer conductor a thin tube of radius R2, with vacuum in the region between them. Electromagnetic waves can propagate outward (with cylindrical coordinate r), and B=(R) sin(kz - t) pointing in the positive direction [with right hand thumb along z, the right hand fingers point in the positive direction]. Note that Eo and Bo are the peak values at the outer edge of the cable, they are related to each other in the same way as for an ordinary plane electromagnetic wave. For the case that R/R2=10, find the time-averaged total energy contained in a length L of the cable. Give your answer as a multiple of Eo(E.)^2(R2)^2L. 7.23 Continuing with the coaxial cable, consider the same specifics that were given in problem 3 in the last HW set: the wave Eo=500V/m, R=0.5mm and R2=5mm. Calculate the average power that must be supplied at the source end of the cable to cause this wave to travel down the cable. Hints: the voltage was calculated in the last problem set, which is one way to calculate this, combined with the impedance: the cable impedance acts in many ways like a resistance, even though there isn't any dissipation in the cable as there would be for an actual resistor. Or, you could consider the average Poynting vector flux down the cable, which is also equal to power or use both methods to see if they match. Also note, don't forget to account for the difference between the peak and average value. W

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Group Exercise ? Develop CRC cards for the simplified ATM system ? Minimally, use the classes ATM, Bank, Account, Customer, Card ? Give the responsibilities and collaborators for each class ? Did you need more classes? Less? ? Discuss -- What did you think of the process Did it help you in thinking about the system an object oriented fashion?

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4.13-5 Consider the message signal $m_1(t)$ in Problem 4.13-1 and carrier frequency $f_c = 400$ Hz. Follow the example in Section 4.12.5 to generate the following signals: (a) FM modulation signal with $k_f = 50\pi$ in time domain and frequency domain. (b) Derivative of the FM signal and the rectified FM derivative in time domain. (c) Envelope detection output for FM demodulation in time domain.

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3. Consider the system described by $\dot{x} = \begin{bmatrix} -2 & 1 \\ 1 & -2 \end{bmatrix}x + \begin{bmatrix} 1 \\ 1 \end{bmatrix}u$ y = \begin{bmatrix} 1 & 0 \end{bmatrix}x (a) Determine the stability of the system. (b) Is the system state controllable?

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8. From the figure at the right side, are $\angle 1$ and $\angle 2$ adjacent angles? A. both yes & no B. no C. yes D. cannot be determined

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