Numerade

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(Ch. 1) If Barbara, a new mother in the 1950s, followed the advice in Dr. Benjamin Spock's book, The Common Sense Book of Baby and Child Care, she most likely did all of the following with her young children EXCEPT a) minimize parent-child confrontation and conflict b) adopt a relaxed approach to toilet training c) view herself as a guide striving to help her children become cooperative members of the family d) use a parent-centered approach to communicate her expectations

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Even without a report of criminal behavior, a First Responder my find themselves investigating a situation which suggests intervention of some sort in an attempt to avoid criminal consequences. O True O False

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4. (20 points) Consider the following linear time-invariant discrete-time systems (a) $y(n) = 0.6y(n-1) + x(n) - 0.7x(n-1)$ (b) $y(n) = x(n-1) + 2x(n-2) + 3x(n-3) + 2x(n-4) + x(n-5)$ For each of the systems (I) is this a FIR or IIR filter? why?, (II) find the characteristic polynomial $a(z)$, the input polynomial $b(z)$, and (III) find the impulse response $h(n)$ (i.e., $x(n) = \delta(n)$) Note: $a(z)$ and $b(z)$ are the denominator and numerator the transfer function in the z-domain, respectively.

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Problem 2 Calculate the effect of the following single and combined modifications on the above "ideal" cycle and suggest a practical application for each. Present your results in the following tabular format and give a reference to the selected ideal application. Suggestion: In order to avoid confusion, carry out all your calculations in a tabular form. Modification to Cycle Regeneration Intercooling Reheat Reheat + Regeneration Intercool + Regeneration Intercool + Reheat Intercool + Reheat Intercool + Reheat + Regeneration Effect on Thermal Efficiency (+/-)% Effect on Net Work (+/-)% Ideal Application

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5 Steam at 100 bars, 375°C expands isentropically in a cylinder behind a piston to a pressure of 10 bars. Calculate the work done per kg of steam.

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Determine whether each statement is consistent with a positive supply shock, a negative supply shock, a positive demand shock or a negative demand shock. a) September 11, 2001 (Click to select) b) Decrease in interest rates (Click to select) c) Increase in government spending (Click to select) d) Increase in inflation (Click to select) e) Decrease in profit margins (Click to select) f) California wildfires (Click to select) g) Increase in skilled immigrant workers (Click to select)

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Question 1.) A 3-phase magnetic contactor rated at 400 A, 440 V possesses a relay coil connected to 2-phase of the power circuit. The coil absorbs an apparent power of 3500 VA and 300 VA in the open and closed contactor position, respectively. Calculate the inrush exciting current in A. Question 2.) A 3000 hp, 4 kV synchronous motor possesses a synchronous reactance of 5\Omega per phase. The stator is connected in wye, and the motor operates at full-load (3000 hp). If the efficiency is 97% and the leading power factor is 90%, calculate the induced voltage per phase of the motor.

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A sporting chance. Two hockey teams, A and B, play a game. On the basis of their previous results, the probability of A winning, P(A), is calculated to be 0.65. Why is it not possible to calculate directly P(B), the probability of team B winning, without further information?

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The time to complete a bridge varies inversely with the square root of the number of people working. If 9 people can complete the job in 75 days then how long would it take 25 people?

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2) (1,5 ?i?m): G?i O là giao ?i?m c?a tia IB và tia KC. a) Ch?ng minh r?ng: ?OBC là tam giác cân b) Gi? s? tam giác ABC là tam giác ??u, hãy ch?ng minh ?BOC = 60°. c) G?i H là trung ?i?m c?a BC. Ch?ng minh 3 ?i?m A, H, O th?ng hàng.

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juan m.