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lourdes su-rez

lourdes s.

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Question 3 In which species does nitrogen (N) have the highest oxidation number? (Hint: none of the oxygen containing compounds are peroxides) ? NH$_3$ ? HNO$_2$ O N$_2$ ? HNO$_3$ 4 pts

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Q1. What are the controllable parameters of the PID controller that: A. Reduce the settling time. B. Reduce the maximum possible overshoot C. Eliminate the steady state error

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the per person consunption of meat changed from 71.9 pounds in 2000 to 59.1 pounds in 2020. What is the relative change?

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Question 4: What usually causes the vanishing gradient problem during deep learning training? A. Too large a learning rate B. Too small learning rate C. Too deep network layer and inappropriate activation function D. Batch size too small

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Which step of photosynthesis requires light? Match the step to the answer.

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In macroeconomics, ______ denotes the relationship between the total quantity of goods and services and the price level for output. A) aggregate supply (AS) B) macroeconomic equilibrium C) aggregate demand (AD) D) potential GDP

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Calculate the volume in milliliters of a 1.5 mol/L sodium thiosulfate solution that contains 25.0 g of sodium thiosulfate (Na2S2O3). Round your answer to 2 significant digits.

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2. (21 puntos) Un transformador monofásico real tiene 2000 vueltas en el lado primario y 500 vueltas en el lado secundario. Las resistencias de los embobinados son R1 = 2 ?, y R2 = 0.125 ?; la reactancia de fuga ("leakage") son X1 = 8 ? y X2 = 0.5 Q. La impedancia de la carga, conectada en el lado secundario del transformador, es Z2 = 12 ?. (demostrar todos los pasos y cálculos para obtener puntos parciales; circular la respuesta de cada parte) a. (3 puntos) Dibuje el diagrama equivalente del circuito e identifique todos los parámetros, incluyendo las incógnitas. b. (3 puntos) Si el voltaje aplicado en el lado primario del transformador es de 1000 V, determine la resistencia y reactancia equivalente referida al lado primario del transformador. $R_{eq1} = R_1 + a^2R_2$ $X_{eq1} = X_1 + a^2X_2$ c. (3 puntos) Determine la impedancia de la carga Z2' referida al lado primario del transformador. Note que el circuito equivalente incluye dos impedancias en serie en el lado primario ($Z_{eq1}$ y Z2') d. (3 puntos) Determine la corriente del lado primario del transformador. e. (3 puntos) Determine el voltaje del lado primario del transformador. f. (3 puntos) Determine el voltaje del lado secundario del transformador (e.g., V2,FL) g. (3 puntos) Determine el porciento de regulación de voltaje.

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This question is about the bounded-buffer producer-consumer problem with condition variables. The last version of the problem we studied was a solution for multiple producers, multiple consumers, and a buffer of any size. A problem we encountered was how to ensure that a signal on a condition variable would wake the right type of thread. One solution to this type of problem is to use a broadcast signal, but we considered a different solution. Which of the following is the solution to this problem that we considered? A. Using two separate state variables, one for each type of thread. B. Using a condition variable with two queues. C. None of the other answers. D. Using a state variable separate from the condition variable to make sure we woke the right type of thread.

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Question 1 The spring supporting a mass is 1 cm long in the equilibrium position. The transient in Figure Q1 shows how its length changes with time when a constant force of 250 N is applied to the mass at time t = 1 second. Estimate: a) The mass. (4 marks) b) The stiffness. (3 marks) c) The equivalent viscous damping co-efficient for the system. (5 marks) d) The time in seconds for the oscillations to diminish to 0.1 mm. (8 marks) But not necessarily in that order. [Total 20 marks] 2.75 2.5 2.25 2-- S 1.75 Spring length s (cm) 1.5 1.25 1 0.75 0.5 0.25 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Time (sec) Figure Q1

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