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For the next three items, consider a red laser light traveling in a crystal glass at a speed of 1.33x108 m/s with electric field vector E(y,t) = (8.00 N/C)(+î) sin(-(9.93 x 106 rad/m)y + wt]. 4. Freak! What is the frequency of the light? A. 2.10 x 1014 Hz B. 4.74 x 1014 Hz C. 1.32 x 1015 Hz D. 8.30 x 1015 Hz 5. Dear Prop. What is its direction of propagation? A. along +y-axis B. along -y-axis C. along +z-axis D. along - z-axis 6. Electric Fan. What is its corresponding electric field vector? A. B(y,t) = (6.02 x 10-8 T)(+î) sin((9.93 x 106 rad/m)y – wt] B. B(y,t) = (6.02 x 10-8 T)(-i) sin((9.93 x 106 rad/m)y - wt] C. B(y,t) = (6.02 x 10-8 T)(+î) cos[(9.93 x 106 rad/m)y - wt] D. B(y,t) = (6.02 x 10-8 T)(-i) cos((9.93 x 106 rad/m)y-wt]

 

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For the next three items, consider a red laser light traveling in a crystal glass at a speed of 1.33x108 m/s with electric fi

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Given 1:33 x 188 mis 4 Eo=8.000/ K - 29 99.3x108 radim 는 아 w: KN = 9.93 X 10 x 9.93 *108*1:33x108 w= 1.32 nios his f=w 1.325 it 하 E= E. Sinc-ky twt) represents direction of propagation ty-akis Answer: option A A 6 E. 2 2 1) ws B. - Eo = 6:02x008 11Propagation of E.M Wave along no Ê xß + i =Ê x ſ = Ã x (?) :. În ( :. Bly,t) = Bo (-ê) Sin (-ky + wt) Bo (-?) (- Sin (ky + wt:: BC&st)= 602 x Tots (+1) sin(9.933 oby-wr) Answer: option: B B

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QUESTION 6 (a) The bar shown in Figure Q2(a) is subjected to tensile load of 150 Kn. If the stress in the middle portions is limited to 160 N/mm², determine the diameter of the middle portion. Find also the length of the middle portion if the total elongation of the bar is to be 0.25 mm. E E = 2.0 + 105N/mm². (12 marks) 150 KN 10 cm DIA 10 cm DIA 150 KN 45 cm Figure Q6(a) (b) A brass bar, having cross-section area of 900 mm², is subjected to axial forces as shown in Figure Q2(b), in which AB = 0.6 m, BC = 0.8 m, and CD = 1.0 m. Find the total elongation of the bar. E = 1.0 + 105N/mm2 . (8 marks) Page 4 of 5 B D 40 KN 70 KN 20 KN 10 KN Figure Q6(b) (TOTAL = 20 MARKS)

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  Introduction To find incremental revenue and cost, we subtract Current revenue and cost from Projected revenue and cost. Answer Current Situation Projected Sales and Profit Incremental Revenues and Costs Total Revenue Php1,500,000 Php1,800,000 + Php3000,000 Variable Cost 575,000 425,000 - Php 332,000 Direct Fixed Costs 625,000 700,000 + Php 75,000 Indirect Fixed Costs 100,000 100,000 No change Profit Php 200,000 Php 575,000 + Php 375,000 Profit increases by Php 375,000, thus a new camera and coffee maker must be purchased.

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