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Problem 1 The air at the inlet to the hairdryer has temperature, pressure and velocity equal to 20°C, 100kPa and 7m/s, respectively. It is then heated by a resistance wire to the 50°C at the outlet. The cross-section area is constant along the hairdryer and equal to 60 $cm^2$. Calculate the power supplied to the hairdryer as well as volumetric flow rate of the air and its velocity at the outlet. Neglect heat losses to the surroundings and the change in kinetic energy. The air can be treated as an ideal bi-atomic gas with gas constant 287 J/(kgK). The pressure in the system is constant. The specific enthalpy of air can be calculated with a formula: $h = c_pT[°C]$

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Cell Biology 3100 Spring 2023 Problem Set 2 25 points Part 1: The bubonic plague or black death in medieval Europe killed ~1/3 of the European population during the 14th century. The bacteria Yersinia pestis causes the bubonic plague and is still in circulation around the world, particularly in places like Asia, Africa, South America and the desert southwest of the US. Globally there are approximately 1000 cases a year with around 10 in the US. Fortunately, because the disease is caused by bacteria, it can be treated with antibiotics. Most deaths now occur in areas that lack health care like regions experiencing political unrest. In May of 2019, a Mongolian couple died from the plague. Before they died, they had eaten the raw meat and kidneys of an infected marmot. Marmot meat is a local folk remedy believed to promote good health although eating marmot is banned. Let's consider the biology of marmots and the bacteria Yersinia pestis. 1 (2pts). Most mammals do not alter their membrane lipid compositions in response to temperature changes as mammals are endothermic and regulate their body temperature. The marmot is an exception and regulates its membrane lipids during hibernation when body temperatures drop to ~5°C, close to ambient temperature, in the winter months. Explain how marmots could alter their phospholipid membranes to prepare for hibernation. needs to be more fluid, meaning More double bonds i shorter phospholipid tails 2 (3pts). Yersinia pestis proteins bind to transmembrane proteins on the host cell to gain access to the host cell cytoplasm. TLR4 is a transmembrane host cell protein that recognizes gram negative bacteria like Y. pestis and activates an immune response against the bacteria. It moves freely across the host cell membrane. Integrin proteins are also bound by the Y. pestis bacteria. Integrins bind to many proteins in the cytosolic cytoskeleton and the extracellular matrix outside the plasma membrane. A. The following SPT data are from TLR4 and $\alpha$-integrin. Label each of the SPT traces as either TLR4 or $\alpha$-integrin. B. Draw the FRAP profiles you predict you might see for TLR4 and $\alpha$-integrin. fluorescence in bleached area bleach time fluorescence in beaded area bleach

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single mutation blocks the conversion of phenylalanine to tyrosine. Is the mutant geneexpected to be pleiotropic? Explain.

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The plasma membrane is highly flexible and can change its shape and composition. Therefore, it is described as the ___-mosaic model of the plasma membrane. O rigid O solid O phospholipid O fluid

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Question 1 Which of the following involves the skeletal system-bones, joints, limbs, and associated muscles? A neuromotor impairment A health impairment Multiple disabilities An orthopedic impairment 1 pts

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What is the project during if the desired completion probability is 99.6%?

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Rachel wants to save money to purchase a car. She buys an annuity with monthly payments that earn 2.1% interest, compounded monthly. Payments will be made at the end of each month. Find the total value of the annuity in 3 years if each monthly payment is $508. Do not round any intermediate computations, and round your final answer to the nearest cent

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The lifetime of a certain light bulb is modeled by the probability density function $f(t) = \frac{1}{3000}e^{-t/3000}$. What are the average and median lifetimes of this light bulb?

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Total energy from two isolated A-atoms to the A molecule. Using the Virial theorem, find the change in the arrangement as shown in the figure. Is this configuration energetically favorable? Calculate the total electrostatic potential energy (PE) of all the charges when they are Q.1 am. Using the Virial Theorem, consider the following: Does this arrangement have a lower energy than two separated A atoms? The radius (r) of the A atom is A molecule is considered in a simple way as two touching A atoms as depicted in the figure.

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BIMEAMIMECHANICALINSTRUMENTATIONAND MEASUREMENTI Question 1 The temperature level is 40 Hz with an accuracy of 5%. Calculate the maximum allowable time constant. (5 marks) Assume that the time constant of the temperature sensor is equal to the maximum allowable time constant found in Question a. Calculate the phase shift at 30 Hz. (3 marks) The frequency is 0.5 Hz. The time constant of this sensor is 5 s. Calculate the time delay in the response of this sensor and how much does the output amplitude decrease? (8 marks) By first-order approximation, the temperature level is to be included in the temperature monitor. The opening temperature of the reactor is 350Â°C. If a sudden rise of 30Â°C occurs in 2 seconds, determine the maximum allowable time constant for the sensor. (3 marks) At the instant of shutting down the reactor, what will be the reading shown by the temperature sensor? (3 marks) [Total: 25 marks] Question 2 The acceleration of a cart with length L moving down an inclined plane with an inclined angle to horizontal can be determined by measuring the change in speed of the cart at two points with each photocell. Each photocell measures the time for the cart passing it. Given the measurements 5.0 cm, 1000.2 cm, 0.0540.001 s, and c=0.0310.001, estimate the percentage uncertainty in acceleration. The equation of acceleration is given below. (15 marks) An automotive manufacturer removes the friction linings from the clutch plates of drag race cars after test runs. A sampling of 10 linings or more are tabulated in m204.5, 231.1, 157.5, 190.5, 261.6, 127.0, 216.6, 172.7, 243.5, and 291.6. Calculate the mean measurement and the tolerance limits for a 90 percent confidence level. Express the linings for wear using the obtained results. (10 marks) [Total: 25 marks] This question paper consists of 4 questions on 6 printed pages.

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elizabeth w.