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What is the frequency of green light that has a wavelength of 531 nm? (c = 3.00 x 10⁸ m/s)
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- Both spotlights SPOTLIGHT#1 and SPOTLIGHT#2 are place at 20 meters from the stage. You want to produce a circle of light of 1 meter diameter with the SPOTLIGHT#1and a circle of light of 2 meters diameter with the SPOTLIGHT#2If the diameter of the low power field is 1.5 mm, an object that occupies approximately a 1/3 of that field has an estimated diameter of what mm?You have a racemic mixture of d-2-butanol and l-2-butanol. The d isomer rotates polarized light by +13.5∘. What is the rotation of the polarization of light of your mixture?
- The amount of chlorophylla (M, 892) in a spinach leaf is about 20 µg/cm² of leaf. In midday sunlight, the average rate of energy reaching the leaf is 5.4 J/cm². min. Assuming an average photon energy of 270 kJ/einstein and that the leaf absorbs 50.0% of the radiation, calculate the rate of light absorption by the photons in units of einstein/cm²-min. Number rate= 1.6× 10¹4 Calculate the amount of time, in seconds, that it takes for a single chlorophyll molecule to absorb a photon. The molar mass of chlorophyll is 892 g/mol. time = Number einstein/cm². min Given that the average lifetime of an excited chlorophyll molecule in vivo is 1 ns, calculate the fraction of the chlorophyll molecules that are excited at any one time. Enter the fraction as a decimal. fraction= NumberAfter performing an FTIR analysis on CO, you plot transition frequency (cm¯1) vs. m and fit your data to a polynomial equation. The equation you obtain is y = -0.027x2 + 4.0x + 2143. Based on these results, what is the value of the fundamental vibrational frequency? cm 1Consider a bi convex lens with radius of curvatures |R1| = 30 mm and |R2| = 180 mm, ct = 5 mm and glass is N-BK7. This is used as camera lens in order to image a man who is at 1 km away from the camera. We want to resolve 10 cm on his body. Assume that λ = 550 nm. Using zemax, determine the MTF value for the resolution of R = 80 lp / mm in image plane which is placed at paraxial focus. (Hint: First, find the diameter of the lens) Which one: a.32.1 % b.28.7 % c.12.3 % d.58.5 % e.46.8 % f.57.2 % g.20.9 % h.15.6 %
- 20 4. A sample containing ethanol and water was found to have n6 = 1.3400. Calculate the exact percentage of ethanol and water in this example. Show your work. (Hint: Solve this mathematically. Assume a linear relationship between concentration and refractive index. You can make the y-intercept the refractive index of water, and use the slope formula to find the slope. The x axis (concentration) will be from 0% ethanol to 100% ethanol. From this information, you can get the equation of the line, then plug in your numbers from there.)Below is a Beer's Law Plot for the concentration of a specific colored compound x. A solution of compound X is measured with the spectrophotometer to have an optical density of 0.60. a) What is the concentration of compound X in this solution. Answers must contain proper units for full credit. b) The absorbance of this compound was measured at 540 nm. Why was this absorbance chosen? 0.9 0.8 0.7 0.6 805 4 0.4 0.3 0.2 Absorbance at 540 mWhat is the wavelength of a 6.76 x 1012 /s wave? Sorry im just really stuck on this question, Please dont leave any minor detail in the question, And also may u step by step this equation.
