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An experiment is designed to measure the partition coefficient, K, associated with the transfer of a pharmaceutical product through a polymer material. The partition coefficient is defined as the ratio of the densities of the species of interest (the pharmaceutical) on either side of an interface. In the experiment, liquid pharmaceutical ( \(\rho=1250 kg/m^3\) ) is injected into a hollow polymer sphere of inner and outer diameters Di= 5mm and Do= 5.1mm, respectively. The sphere is exposed to convective conditions for which the density of the pharmaceutical at the outer surfaces is zero. After one week, the sphere's mass is reduced by \(\Delta M= 8.2 mg\) . What is the value of partition coefficient if the mass diffusivity is Dab= 0.2*10^-11 m^2/s?
A sample is bombarded by incident X-rays, and free electrons in the sample scatter some of the X-rays at an angle of -0= 122.0 degrees, Determine the wavelength (in nm) of the incident X-rays
An electron moving through an electric field experiences an acceleration of 4.3 103 m/s2. Find the electric force acting on the electron
A 230-µF capacitor and a 40m H inductor are in series with a 345 O resistor. What is the impedance at the resonant frequency
A dockworker applies a constant horizontal force of 88.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the cars horn
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 3.4 J of work is required to compress the spring by 0.18 m. Find the value of the mass
A hotel elevator ascends 160m with a maximum speed of 4.20 m/s. Its acceleration and deceleration both have a magnitude of 1.0 m/s2. How long does it take to make the complete trip from bottom to top.
A copper pot with a mass of 0.505kg contains0.175kg of water, and both are at a temperature of21.0?C. Find the final temperature of the system
Determine the Intelligence frequency, carrier frequency, Modulation index, Carrier power, total power in FM signal and power in each sideband.
q1. sound waves of frequency 502 hz enter a window 1.18 m wide. the window is in the exact center of one wall of a
A 24.0 g copper ring at 0.000°C has an inner diameter of D = 2.54000 cm. An aluminum sphere at 103.0°C has a diameter of d = 2.54508 cm. What is the mass of the sphere
Consider a map oriented so that the x axis runs east-west (with east being the "positive" direction), find the direction of the total movement of the driver
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