Engineering

Which of the following best describes the devices that will help prevent moisture from collecting in raceway systems?a. Elbowsb. Integral drainsc. Strainersd. Seal-off fittings
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There is a point where the streamlines, located in the boundary layer of air right next to the wings surface, will separate from the airfoil. This point is called
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Problem 9.10. Which of the following sets of values is closest to iL(0), vC(0).Problem 9.10. Which of the following sets of values is closest to the energy stored in the capacitor and inductor (in J) at t=0-Problem 9.10. What is the value of Vmax (integer answer required) in VoltsProblem 9.10. Which of the following is closest to the expression for vc(t) in VoltsIn the cicuit of Figure P9.10, suppose ui"(1) = 10 V, R= 10 , C = 0.4 mF, L = 0.25 (a) Compure 0), vo) i(0), and i1(0*)(b) Compute the energy stored in the inductor and the capacitor at t = 0(c) Using only energy considerations, compute the maximum value of ), t> 0 (d) Find the analytical expression for vt), and verify the maximum value of v) computed in part (c)
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disc type parking brake mechanically applies the brake pads againts the disc rotor when the actuating lever causes the check balls to ride up the ball ramp
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The statements below refer to the design and operation of the power sub-system on a spacecraft. Select all those statements that are correct.Partial credit is available for each correct answer. Select only those statements you know to be correct because negative marking is appliedwithin this question (although it is not possible to get a negative mark for the question overall).Radioisotope Thermoelectric Generators (RTGS) are commonly applied to earth-orbiting spacecraft to provide power for the eclipse periodwhen the solar panels are ineffective.Jupiter is considered the approximate limit for solar-powered orbital missions; missions to planets beyond this will require RadioisotopeThermoelectric Generators (RTGS).When sizing solar arrays, the area required typically has to be factored up as the temperature decreases because the cells operate lessefficiently when cold.A spacecraft designed to operate in orbit at Mars will require generally require significantly smaller solar arays than one designed foroperation at Earth.When sizing solar arrays, the area required must be factored up to allow for the array efficiency to decrease with time due to degradation.When sizing solar arrays, the area required typically has to be factored up as the temperature increases because the cells operate lessefficiently when warm.Radioisotope Thermoelectric Generators (RTGS) have many moving parts, which limits their reliability for long-duration missions.For a spacecraft in planetary orbit, power for the eclipse period is commonly provided by a battery as a secondary power source, and anincreased solar array area to give extra power to charge the batteries whilst not in eclipse.
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the the rectangular components of acceleration for a particle are ax = 3t and ay= (30-10t) where a is in m/ s^2 . if the particles start from rest at the origin. find the radius of curvature of the path at the instant 2 second
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Determine the maximum thickness of an aluminium sheet in which a 50 mm diameter hole is to be punched, if the compressive stress in the punch is not to exceed 80 MPa.
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In which region of the Western Hemisphere would the Encomienda system have been practiced?
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A force F having a magnitude of F = 165 N acts along the diagonal of the parallelepiped. Determine the moment of F about point A, using MA =rB x F and MA =rC x F.
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A stainless steel vessel holds 5.4 liters of milk. One-third of the milk is given to a cat. After some water is added to the milk that remains, its volume becomes 1.25 as much as it was before the water was added. If one-third of this diluted milk is given to three kittens, how much milk does the vessel hold now
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Write a method that starts with 2 strings. If one string is odd and the other string is even then it will place the odd string in the middle of the even string. But if both Strings are of odd length then it will concatenate the first letter of the first string with the LAST letter of the second string. And finally, if the strings are both of Even length then it will take the first half of the first string and concatenate it with the second half on the second string.
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A flow i decribed by velocity field V=ayibxj where a = 2 (m/) and b = 1 (1/) , coordinate are meaured in meter. A) Obtain the equation for the treamline paing through the point (2,5). B) At t=2 , what are the coordinate of the particle that paed through point (0,4) at t=0. C) At t=3 , what are the coordinate of the particle that paed through point (1,4. 25) 2 econd earlier
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TRUE OR FALSE smiles.substring(1, 5) returns "mile".
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A catapult has two rubber bands, each with a square cross-section with a width 4 mm and length 300 mm. In use its arms are stretched to three times their original length before release. Assume the the modulus of rubber is 10-3 GPa and that it does not change when the rubber is stretched. How much energy is stored in the catapult just before release?
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What are the two major grains found on ALL lumber?
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Show that the minimum cation-to-anion radius ratio for a coordination number of 6 is 0.414. [Hint: Use the NaCl rock salt crystal structure, and assume that anions and cations are just touching along cube edges and across face diagonals.
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Exactly 5. 00 mL aliquots of a solution containing Phenobarbital were measured into 50. 00ml volumetric flasks and made basic with KOH. The following volumes of a standard solution of Phenobarbital containing 2. 00 g/ml of Phenobarbital were then introduced into each flask and the mixture was diluted to volume: 0. 00, 0. 500,1. 000, 1. 50, and 2. 00ml. The fluorescence of each of these solutions was measured with a fluorometer, which gave volumes of 3. 26, 4. 80, 6. 41, 8. 02, and 9. 56 respectively. (a) Pot the data. (b) Using the plot from (a) calculate the concentration of Phenobarbital in the unknown. (c) Derive a least-squares equation for the data. (d) Find the concentration of Phenobarbital from the equation in (c) (e) Calculate a standard deviation for the concentration obtained in (d)
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Look at the following statement. while (++x < 10) Which operator is used first? ++ Neither. The expression is invalid. O both ++ and < operators are used at the same time.
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If water is so abundant on Earth, why are water resources such a big concern?a. Water resources are not necessarily where humans need them and when they need them.b. Humans are not very adept at exploiting water resources, so many go unused.c. Most of the water on Earth is frozen in polar ice sheets.d. Most of the water is caught up in the hydrologic cycle and is therefore not readily available.
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the rectangular components of acceleration for a particle are ax = 3t and ay= (30-10t) where a is in m/ s^2 . if the particles start from rest at the origin. find the radius of curvature of the path at the instant 2 second.
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The section is experiencing a positive bending moment about the z-axis, where Mz = 1.13 kN-m. What is the resulting stress at the top and bottom surfaces? And are they in tension or compression?
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Which of the following statements explain the difference between a diesel electrician and a diesel mechanic?
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Question 3 Which of the following is least comparable to Eventbrite? 1 point 4. Question 4
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A single direct acting controller used to control space temperature and set up for 72F setpoint with an 8F throttling range assigned. The system pressure range is from 3 to 13 psig. Predict the following: (a) Controller PB setting when remote sensors with spans of 50F, 150F, and 200F are used. (b) Controller pressure range. (c) Controller setpoint. (d) Controller output pressure at T = 72F using the same sensors as in (a). (e) Controller output pressure at T = 76F. (f) Predict the output pressure of the controller at T = 80F when th
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