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Explain other ways that hill climbing can add randomness to avoid getting stuck. (By other we mean other than simulated annealing )

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Given the state of stress (in units of MPa): $\sigma_x = 90$, $\sigma_y = 60$, $\tau_{xy} = 15$, and $\sigma_z = \tau_{xz} = \tau_{yz} = 0$, which has an additional tensile stress of 30 applied at an angle of $30^\circ$ from the x-axis. Determine the principal stresses and the maximum shear stress for the combined state of stress.

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Gauge Direction: Read each item carefully. Write the letter of the correct answer. 1. Which of the following phenomena is not produced by refraction? A. Crepuscular rays B. H C. Mirages D. Sundgs 2. Which of the following are capable of producing a red sunrise or sunset? A. Volcanic ash B. Small suspended salt particles C. small suspended dust particles D. All of the above 3. A ring of light encircling the sun or moon could be either $ \qquad $ A. A rainbow or a halo. B. A halo or a sundog. C. A halo or a corona. D. A sundog or a crepuscular ray. 4. Refraction of light by the atmosphere is responsible for A. Mirages. B. Increasing the length of daylight. C. Causing the sun to appear to flatten-out on the horizon. D. All of the above 5. Which of the following are caused by the bending of light through ice crystals? A. Halos and sundogs B. Rainbows and halos C. Halos and the green flash D. Sundogs and sun pillars 6. Halos are caused by $ \qquad $ A. Scattering of light by ice crystals. B. Diffraction of light by cloud droplets. C. Refraction of light passing through raindrops. D. Refraction of light passing through ice crystals. 23 LU_Physical Science_Module 13 7. On a foggy night, it is often difficult to see the road when the high beam lights are on because of $ \qquad $ of light by the fog. A. Absorption B. Refraction C. Scattering D. Transmission 8. If the setting sun appears red, you may conclude that A. The next day's weather will be stormy. B. You will not be able to see the moon that night. C. Only the longest waves of visible light are striking your eye. D. The sun's surface temperature has cooled somewhat at the end of the day. 9. This can only be seen when the sun is to your back and it is raining in front of you. A. Halo B. Rainbow C. Sundog D. Sun pillar 10. Which of the following processes must occur in a raindrop to produce a rainbow? A. Refraction, reflection, and scattering of sunlight B. Refraction, reflection, and dispersion of sunlight C. Reflection, scattering, and dispersion of sunlight D. Transmission, reflection, and dispersion of sunlight 11. What event in Hertz' experiment made him think that EM waves are being transmitted? A. Production of light B. Production of wave C. Production of spark D. Production of sound 12. What quantities were needed to solve for the speed of the wave? A. Amplitude and wavelength B. Frequency and period C. Speed and wavelength D. Wavelength and frequency

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Moving a ____ through a magnetic field induces electrical current in that conductor. Wire Rubber tube Glass Magnet

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The cell organelle that is the control center of the cell’s activities, heredity, and life functions. It contains the DNA / Chromosomes / Chromatin.

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3. Find the exact area of the surface obtained by rotating the curve about the x-axis. $x = \frac{1}{3}(y^2 + 2)^{3/2}$, $1 \le y \le 2$

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Question 3: Explain FIVE (5) reasons behind the popularity of pay-for-performance plans in most organisations. (25 marks)

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Texts: Can this question be answered the same way as question 12 regarding the Reason? 13) Given the following valid argument, supply the reason that justifies each statement: Statement Reason ~(m → n) v h 1. m → n 1. h → ~(a → w) 2. ~(m → n) v h 2. m → n 3. h 3. ~p → (a → w) 4. h → ~(a → w) 4. p v s 5. ~(a → w) 5. ~p → (a → w) 6. p 7. p v s 8.

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Question 22 10 pts Suppose a group of individuals are seeking to purchase health insurance. 80% of the members are considered low- risk and have expected medical costs of $6,000 during the upcoming year. 20% of the members are considered high- risk and have expected medical costs of $40,000. Suppose that the individuals are seeking to pool together. What would the actuarially fair price be for each member's policy. Now suppose that the insurance company places a 15% loading factor. How much would each member of the group have to pay for health insurance. Please remember to show your work.

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Project 6- Nonpermanent Unions The bracket in the figure is welded to the plate. The material for bracket and plate is to be Aluminum 3004 (preferred) or, if not possible, a low-carbon steel such as AISI 1018. The thickness of bracket and plate is t = ¼ in and the diameter of the hole is D = 1 in. A force F = 4000 lb is being applied at a distance of 3 in from the plate. This design needs to be changed to make it a nonpermanent union. Design a fastened union that can withstand the forces indicated. In order to facilitate the fastened union, the bracket can be modified by adding ears at each side to place the bolt holes. The union will be disassembled from time to time. a) Identify the loads acting on the bolted union. b) Select the number of bolts, material and diameter, and select the preload. c) Calculate the length of the bolts and the load on the bolts and on the material because of axial loads. d) Distribute the external loads among all the bolts and calculate the factor of safety against shear of the bolts, assuming that the bolts take all the external shear force (basically for the critical case in which friction does not take the load because of loss of preload) In summary, design the new union and make sure you have identified and checked all forces acting on the union, and give the factors of safety for the union.

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stephen w.