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Project Description: This project involves designing and building a motor-controlled fan system with LED indicators to display the fan’s operational status. The system uses a 12V relay to control the power supply to a 3V motor, which acts as a fan. The project includes two LEDs: a green LED that lights up when the fan is ON and a red LED that indicates when the fan is OFF. The fan is controlled via a push button switch, which triggers a transistor-based relay circuit to switch the fan ON or OFF. This project combines basic principles of electrical engineering such as motor control, relay switching, transistor operation, and LED indication, making it an excellent introduction to electrical engineering for first-year students. components 1. 3V DC Motor 2. 12V Relay 3. Transistor (BC547): 4. Push Button 5. Green LED 6. Red LED 7. Resistors 8. Diode (1N4007) 9. 12V Power Supply 10. 3V Power Supply Report accompanying the artefact should contain: Should include, but is not limited to, the following components: 1. Title: 2. Introduction: 3. Explanation: 4. Applications: 5. Case study: 6. Conclusion: 7. References: Include a list of sources used for information and data.

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Question 1 (0.15 points) A new drug has been discovered that destroys astrocytes. Based on your knowledge of astrocytes function, which of the following would occur if this drug was administered? Neurons in the brain would no longer have myelin Neurons would not be able to get needed nutrients The immune system of the brain would effectively be destroyed All of the above None of the above

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The equilibrium constant (Kc) for this reaction is 1.60 at 990 °C: H2(g)+CO2(g)⇌H2O(g)+CO(g) Calculate the number of moles of each component in the final equilibrium mixture obtained from adding 1.00 mol of H2, 2.00 mol of CO2, 0.750 mol of H2O, and 1.00 mol of CO to a 5.00-L container at 990 °C.

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What is the molarity of a solution that contains 74.5 g of KCl in 500.0 mL of water?

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Social comparison can help us develop a sense of self, whether it be positive or negative: True False

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Question 34 Sales taxes are considered to be: a. digressive. b. regressive. c. proportional. d. progressive.

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At least one of the answers above is NOT correct. Suppose $z = x^2 \sin y$, $x = -4s^2 - t^2$, $y = -6st$. A. Use the chain rule to find $\frac{\partial z}{\partial s}$ and $\frac{\partial z}{\partial t}$ as functions of $x$, $y$, $s$ and $t$. $\frac{\partial z}{\partial s} = 2x\sin(y)(-8s) + x^2\cos(y)(-6t)$ $\frac{\partial z}{\partial t} = 2x\sin(y)(-2t) + x^2\cos(y)(-6s)$ B. Find the numerical values of $\frac{\partial z}{\partial s}$ and $\frac{\partial z}{\partial t}$ when $(s, t) = (-3, 1)$. $\frac{\partial z}{\partial s}(-3, 1) = -8360.79$ $\frac{\partial z}{\partial t}(-3, 1) = 23481.67$

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a) The DC base, collector, and emitter currents. b) The DC base, collector, and emitter voltages. c) The emitter dynamic resistance of the BJTs. d) The differential gain. e) The single-ended gain. f) The common-mode gain.

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The storage of glucose into glycogen in the short-term reservoir and movement of glucose into the body's cells for energy is the job of which pancreatic hormone?

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Prelab question: The table below lists the chemicals involved in the synthesis and purification of benzopinacolone. It helps to keep the chemical information organized with all the numbers in one place. ● The equivalents of reagents are the mole ratio of the interested chemical to the starting material benzopinacol. ● MW molecular weight V = volume. (1) Use ChemDraw to find out the molecular weight for benzopinacolone and put it underneath that compound. (2) Fill out the blue lines in the boxes below and show your calculation for full credit. Prelab question: The table below lists the chemicals involved in the synthesis and purification of benzopinacolone, It helps to keep the chemical information organized with all the numbers in one place. The equivalents of reagents are the mole ratio of the interested chemical to the starting material benzopinacol MW=molecularweight V=volume. 1) Use ChemDraw to find out the molecular weight for benzopinacolone and put it underneath that 2) Fill out the blue lines in the boxes below and show your calculation for full credit. HO HO Ph "Ph Ph Ph benzopinaco C26H22O2 Mol.Wt:366.45 ICHgCOOH reflux,5 min Ph Ph +HO Ph Ph benzopinacolone C2eH2oO Mol.Wt. 362.47 MWor V equivalent mmolu concentration 1 mass(g) solvents benzopinacol 1.0 1.89 366.45g/mL 1.0g N.A I in acetic acid solution 20 mg/mL 5 mL Theoretical mass: bonzopinacolone 1.0 362.47 g/mL N.A. Cold water (quench) N.A. N.A. N.A. N.A. 20 mL 15-30 ml Hexanes/Toluene (recrystallization) 1mol=1000mmol. N.A. N.A. N.A NA

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claudia u.