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A 12-year-old with sickle cell disease presents to the ED with chest pain, cough, fever (38.9°C / 102°F), and increasing shortness of breath. The nurse reviews the results: SpO₂: 90% on room air CBC: Hgb 7.2 g/dL (↓), Reticulocyte count ↑, WBC 15,000/mm³ (↑) Chest X-ray: New left lower lobe infiltrate Which provider order should the nurse implement first?

Double-slit interference: Light from a 600 nm source goes through two slits 0.080 mm apart. What is the angular separation of the two first order maxima occurring on a screen 2.0 m from the slits?

Diffraction grating: Monochromatic light is incident on a grating that is 75 mm wide and ruled with 50,000 lines.  The second-order maximum is seen at 32.5°.  What is the wavelength of the incident light?

Double-slit interference: In a two-slit experiment, the slit separation is 3.00 × 10-5 m. The interference pattern is recorded on a flat screen-like detector that is 2.00 m away from the slits. If the seventh bright fringe on the detector is 10.0 cm away from the central fringe, what is the wavelength of the light passing through the slits?

Double-slit interference: Coherent monochromatic light of wavelength 632.8 nm passes through a pair of thin parallel slits. The figure shows the central portion of the pattern of bright fringes viewed on a screen 1.40 m beyond the slits. What is the distance between the two slits?

Diffraction grating: What is the angular separation of the two second-order spectral lines having wavelengths 417 nm and 388 nm using a diffraction grating having 456 lines/mm?

Single-slit diffraction: A single slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum, using monochromatic light of  490-nm wavelength. What is the width of the slit?

Double-slit interference: Light of wavelength 575 nm passes through a double-slit and the third order bright fringe is seen at an angle of 6.5° away from the central fringe.  What is the separation between the double slits?

Field intensity: A sinusoidal electromagnetic wave in vacuum delivers energy at an average rate of 4.00 µW/m2.  What are the amplitudes of the electric and magnetic fields of this wave? (c = 3.0 × 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2) (10 points)

Diffraction grating: A diffraction grating has 300 lines per mm. If light of wavelength 630 nm is sent through this grating, what is the highest order maximum that will appear?