The moon's illumination changes in a periodic way that can be modeled by a trigonometric function. On the night of a full moon, the moon provides about 0.250.250, point, 25 lux of illumination (lux is the SI unit of illuminance). During a new moon, the moon provides 000 lux of illumination. The period of the lunar cycle is 29.5329.5329, point, 53 days long. The moon will be full on December 252525, 201520152015. Note that December 252525 is 777 days before January 111. Find the formula of the trigonometric function that models the illumination LLL of the moon ttt days after January 111, 201620162016. Define the function using radians. \qquad L(t) =L(t)=L, (, t, ), equals

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Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

Why is metal often used for cooking pan?