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Light scattering in air. Estimate numerically, using the Lorentz model of the atom, the value of the scattering cross section for molecular nitrogen (N2) for visible light at a wavelength of 500 nm. Use this result to estimate the value of the scattering coefficient R for air at STP. Compare this value with that obtained using Eq. (8.2.22) and the known refractive index of air. (The measured value for 90-degree scattering of unpolarized light, Ru 90, is approximately 2×10-8 cm-1.) Also, estimate numerically the attenuation distance of light in air-that is, the propagation distance through which the intensity falls to 1/e of its initial value due to scattering losses
After integrating and getting C1 and C2 for the equationsof slope and deflection,Why do we use x=0 and y=0 to figure out C2, But we don't use those same boundary conditions for finding C1?
Determine the angular acceleration of the cylinder and the minimum coefficient μs of friction for which the cylinder will not slip.
The entrance is square edged, and the elbows are 90o. There is a fully opened gate valve on the suction side and the discharge side, and there is a swing type check valve on the discharge side. Determine the system curve for the pump system.
an unconfined compression test was conducted on a cylindrical clay specimen with the following properties: Peak load at failure = 4.5lb, diameter of sample = 1.2 in.
Assuming approximately 19,296 data points can be held in memory, with a 21X Datalogger (CR23X Micrologger), capturing battery voltage; panel temperature
The total annual runoff from small drainage basin is determined to be approximately normal with a mean of 14.0 in. and a variance of 9.0in^2. Determine the probability that the annual runoff from the basin will be less than 11.0 in.
Stream with a specific weight of 38 N/m^3 is flowing with a velocity of 35 m/s through a circular pipe with f=0.0154. What is the shear stress at the pipe wall
A singly reinforced concrete beam has b=24in, d=12in and it is reinforced with 6#9 bars. If f'c=4ksi and fy=60ksi, determine the beam capacity, Mu = fMn.
A new sports car has a drag coefficient of 0.30 and a frontal area of 21 ft 2 , and is traveling at 110 mi/h.How much power is required to overcome aerodynamic drag if ? = 0.002378 slugs/feet3 ?
Determine the vertical deflection and the slope at the end of A of the bracket. Assume that the bracket is fixed supported at its base, and neglect the axial deformation of segment AB. EI is constant.
What measures can be taken to prevent its occurrence?
When filled to capacity, avertical cylindrical un-pressurized storage tank contains water to a height of 14.5m above its base. Given that the height of the tankis 15m, the diameter 9m and wall thickness 18mm
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