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joan tejada

joan t.

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Q1. Assume that all transistors are operating in the active region (i.e. all necessary biasing conditions are provided) and $V_A = \infty$ for the transistor. (Please support your solutions with short notes.) a) What type of feedback is present in the circuit? [10p] b) Please find the expression for the open loop gain ($v_{out}/v_{in}$), input resistance and the output resistance. (Don't forget to include the loading effect in your analysis) [15p] c) What is the feedback factor, K? [10p] d) Plese find the expressions for the closed-loop gain, input resistance and the output resistance. [15p]

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Which color portion of the visible spectrum emits the lowest amount of energy?

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Select ALL the surface antigens that would be present on the erythrocytes of a patient with Type B blood A antigens B antigens D antigens (a.k.a. Rh factor) NO antigens (A, B, or D) would be present

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The diffusion capacity for carbon monoxide is frequently abnormal in all of the following conditions except? a. Multiple pulmonary emboli. b. Lung resection. c. Chemotherapy-induced pulmonary toxicity. d. Idiopathic pulmonary fibrosis. e. Pulmonary hypertension.

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Read the quotation from "Song of Myself." I too am not a bit tamed, I too am untranslatable, I sound my barbaric yawp over the roofs of the world. Which statement best describes how these lines reflect the general structure of the poem? Just as the poem has a loose, open structure, these lines display personal freedom. The lines reflect the difficult and impenetrable nature of certain parts of the poem. The lines evoke the aggressive tones expressed elsewhere in the poem. The lines indicate an attention to urban settings expressed elsewhere in the poem.

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Part A Write down the equation for pressure as a function of depth in a liquid. Express your answer in terms of the air pressure $p_0$ above the water surface, the gravitational acceleration $g$, the depth $h$ and the density $\rho_w$ of the water. $\text{p(h)} =$ Submit Part B Select the forces acting on the cube. Select all that apply. The gravitational force The normal force The surface-tension force The kinetic friction force The buoyant force

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8. $A = \begin{bmatrix} 1 & 0 & 0 \\ 0 & 1 & 1 \\ 0 & 1 & 1 \end{bmatrix}$

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You look in the microscope and see a nuclear envelope begin to form around chromatids. Which phase are you viewing? O interphase O telophase O metaphase O anaphase

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4. (10 points) If H is a subgroup of G, then by the centralizer Z(H) of H we mean the set \{x \in G|xh = hx \text{ for all } h \in H\}.\newline(a) (5 points) Prove that Z(H) is a subgroup of G.\newline(b) (5 points) Prove that if b is the only element of order 2 in G, then $b \in Z(G)$\newlineSolution:

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In the circuit below, determine the current in the circuit in Amps if R2 = 9 $\Omega$, R3 = 6 $\Omega$, R5=18 $\Omega$, R6=4 $\Omega$, V1 = 1 V and V2 = 18 V. Ans to 3 s.f.

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