A microscale detector monitors a steady flow
Consider a sensor with a characteristic dimension of
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- In the measurement with the thermoeleman circuit, whose voltage-temperature relation is linear and the calibration coefficient is 0.05 mV/ºC, it was understood that the temperature of the reference end is higher than 0ºC after the measurement point temperature is calculated as 80ºC. To resolve this error, this time the measuring tip was immersed in the water-ice mixture and a deviation of 0.15 mV was observed at the millivolt meter. How many ° C is the first value measured as 80 ° C? a. 76.25 b. 77.50 c. 78.00 d. 75.00 e. 77.00arrow_forwardOxygen reaches the veinless cornea of the eye by diffusing through its tear layer, which is 0.60-mm thick. How long does it take the average oxygen molecule to do this? The diffusion constant of oxygen through water is 1.0 x 10-⁹ m²/s. Hint 1. Treat this as a one-dimensional problem. 2. Convert to minutes. 3. Think about the length of the time interval you have calculated. Enter to 2 significant figures Average time taken by O₂ molecule through the tear layer = 30 minutes As a comparison, calculate the time it takes for oxygen to diffuse through a cell membrane about 10 nm thick. Note: Enter time in seconds instead of minutes. Enter to 2 significant figures Average time taken by O₂ molecule through the cell membrane = 0.5 Sarrow_forwardLiquid nitrogen has a density of 0.808 g/mL and boils at 77 K. Researchers often purchase liquid nitrogen in insulated 175-L tanks. The liquid vaporizes quickly to gaseous nitrogen (which has a density of 1.15 g/L at room temperature and atmospheric pressure) when the liquid is removed from the tank. Suppose that all 175 L of liquid nitrogen in a tank accidentally vaporized in a lab that measured 10.00m x 10.00m x 2.50m. What maximum fraction of the air in the room could be displaced by the gaseous nitrogen?arrow_forward
- شكنذرسarrow_forwardQ568: Develop a methodology for a workshop project report, aiming to calculate the diameter of the compressed air pipes in the greenhouse areas (area where only spray guns are used), polishing area (area where only polishing guns are used) and the length of the repair area piping (area where the full flow rate is applied) The formula used is in the attached image:arrow_forwardThe unit of air flow measurement instruement in cooling tower experiment is meter per second. Select one: True Falsearrow_forward
- . A thermocouple is a temperature-measurement device that consists of two dissimilar metal wires joined at one end. An oversimplified diagram follows. Metal 1 ΡOTENTIOMΕΤER V(mV) Metal 2 A voltage generated at the metal junction is read on a potentiometer or millivoltmeter. When certain metals are used, the voltage varies linearly with the temperature at the junction of the two metals: V(mV) = aT(°C) +b An iron-constantan thermocouple (constantan is an alloy of copper and nickel) is calibrated by inserting its junction in boiling water and measuring a voltage V = 5.27 mV, and then inserting the junction in silver chloride at its melting point and measuring V = 24.88 mV. (a) Derive the linearequation for V(mV) in terms of T(°C). Then convert it to an equation for T in terms of V. (b) If the thermocouple is mounted in a chemical reactor and the voltage is observed to go from 10.0 mV to 13.6 mV in 20 s, what is the average value of the rate of change of temperature, dTldt, during the…arrow_forwardI need help answering these two questions.Thank YOUarrow_forward-am. The piston is quickly pushed into the cylinder, which compresses the air inside the cylinder, dramatically A fire sy Increasing the temperature. This causes a small piece of material, such as cotton, in the cylinder to burn. A fire syringe has a cylinder with an initial volume of 10.0 cm, an initial pressure of 1.0 atm, and an initial temperature of 300. K. The piston is pushed down, which decreases the volume to 1.0 cm and increases the temperature to 510. K. Which of the following indicates the final pressure inside the cylinder and helps explain the pressure? The pressure decreases to 0.41 atm; the gas particles in the cylinder hit the walls of the cylinder with less speed. B The pressure remains constant at 1.0 atm; the changes in volume and temperature cancel each other ot. The pressure increases to 5.9 atm; the gas particles in the cylinder hit the walls of the cylinder with greater speed. D The pressure increases to 17 atm; the gas particles in the cylinder hit the walls of…arrow_forward
- For the diffusion coefficient K = 0, the above equation becomes: If known: The flow velocity is constant, U = 0.5 m/s Channel length 1000m Δx = 100m Δt = 1000 sec When t = 0, the concentration along the channel is zero [C(C,0) = 0] The boundary conditions along upstream & downstream are 2 & 0 respectively Calculate the above equation using the concentration C(x,t) & carry out until Time step k-5 with scheme: a. Explicit b. Implicitarrow_forwardI need the answer as soon as possiblearrow_forwardQuestion: Sunflower is 2 m long and diameter of the xylems (capillary tubes of plants carrying water from root to top) are 500 micrometer. Soil water has a surface tension of 0,0728 N/m and the contaminants in the soil water do not affect surface tension of water. Contact angle between the soil water and xylems can be taken as 85° Assume contaminants can only be transported by capillary rise. a) Calculate the capillar rise in the xylems (the height where contaminants can rise) b) Draw a diagram of capillary rise of soil water in the xylems showing the contact angle. c) Can the contaminants in the soil water reach the sunflower at the top of the plant? So, based on this, evaluate if it is safe to eat the sunflowe seeds? Plant length 2m Xylems (carry soil waterfrom root to top) Roots take up soil water and contaminantarrow_forward
- Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage LearningRefrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning