Numerade

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3. Which of the following is an important mechanism of elevating the cardiac output: a. spatial summation b. frequency summation c. increased sympathetic nervous activity d. increase in mean arterial pressure e. none of the above

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A block of mass m is connected to a string and hung over a pulley (Block 1). This string is connected to a second block of mass 2m (Block 2). A third block of mass m (Block 3) is stacked on top of and moving with Block 2 (so there is sufficient static friction between the blocks to prevent sliding). Block 2 is also connected to a fourth block of mass 8m (Block 4) with a second string. Ignore any friction between Blocks 2 and 4 and the surface they are on. What is the tension in the string connecting the Blocks 2 and 4? (8/11)mg (1/4)mg (1/12)mg (2/3)mg (4/5)mg

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The empirical formula for buckminsterfullerene is C1 and it's molar mass is 720.6 g per mole what is its molecular formula

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Determine $V_o$ and the power in the voltage source $P_s$ for the circuit illustrated in Figure 4 under the following conditions: i) When element X is a resistor with R=3ΚΩ. ii) When element X is replaced by a short circuit. iii) When element X is an open circuit. + 5 [V] X 1 [ΚΩ] 1 [ΚΩ] W + 24 [ΚΩ] 1 [ΚΩ] $V_o$

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Let $A = \begin{bmatrix} 12 & -6 & -4 \ 11 & -5 & -4 \ 13 & -7 & -4 \end{bmatrix}$. If we let $x$ be a positive integer, and we calculate $A^x = \begin{bmatrix} a & b & c \ d & e & f \ g & h & i \end{bmatrix}$, then the value of $f$ would be:

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Why does the Turing Test still matter? Group of answer choices a. Because it is developed by Alan Turing b. Because it represents the roots of artificial intelligence c. Because it determines how well the machine mimics human d. Because it is the benchmark for testing artificial intelligence

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CÁLCULO INTEGRACIÓN Actividad 6. Integrando Determina las siguientes integrales, desarrollando en orden y limpio los procedimientos. Describe a detalle el procedimiento en dos de los ejercicios que consideraste con mayor dificultad. 1. $ \int r^{4}\left(7-\frac{r^{5}}{10}\right)^{3} d r $ 2. $ \int \frac{\cos \sqrt{\theta}}{\sqrt{\theta} \operatorname{sen}^{2} \sqrt{\theta}} d \theta $ 3. $ \int \sqrt{\frac{x^{4}}{x^{3}-1}} d x $ 4. $ \int\left(e^{2 x}-e^{-2 x}\right)^{2} d x $ 5. $ \int x^{2} \operatorname{sen} b x d x $ 6. $ \int e^{3 x} \cos 4 x d x $ 7. $ \int_{\frac{\pi}{2}}^{\pi} \operatorname{sen} x \cos x d x $ 8. $ \int_{-1}^{2} \frac{x d x}{x^{2}+4} $ 9. $ \int_{1}^{5} x e^{x} d x $

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Texts: A 250 V, 20 horsepower (hp), self-excited quenching motor is powered by a full load line current of 63 A. The armature and field resistances are 0.1 and 108 ohms, respectively. If the voltage drop from the brushes is 2 V and the friction and core losses (total loss in rotating parts) are 650 W, answer the following: a) What are the shunt-field winding losses and the field current? Calculate and write. b) What are the armature winding losses and brush losses? Calculate and write. c) What would be the total loss in the motor? Calculate and write. d) Calculate and write the efficiency of the motor.

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1. Given the digital control system below where $G_p(s) = \frac{20}{(s+2)(s+3)}$, and T = 0.5 sec. r(t) +e(t) $G^*_D(s)$ $\frac{1 - e^{-Ts}}{s}$ $G_p(s)$ $\rightarrow c(t)$ T Controller ZOH Plant (a) Design a cascaded PD controller to give the system an overshoot of 10% and a settling time of 4 seconds (where necessary, assume the two zeros of the compensator are placed at the same location). (b) Draw a well labelled Simulink model that can be used to simulate the behavior of the compensated system. Remember to include a unit step function as the input and a scope as the output.

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Problems: 1. Consider the following circuit with $v(0^-) = 2V$ and let $f(t) = 2 \cos(\omega_1 t + \frac{\pi}{3}) V$, where $\omega_1 = \frac{1 + \sqrt{3}}{1 - \sqrt{3}} rad/s$. For $t > 0$, obtain: 2? f(t) $\frac{1}{2}F$ (a) the zero-state voltage across the capacitor's terminals, $v_{zs}(t)$, (b) the zero-input voltage across the capacitor's terminals, $v_{zi}(t)$, (c) the transient voltage across the capacitor's terminals, $v_{tr}(t)$, (d) the steady state voltage across the capacitor's terminals, $v_{ss}(t)$, and (e) the total voltage across the capacitor's terminals, $v(t)$.

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julio g.