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Problem: Air is passed above an Arnold cell containing liquid toluene. The temperature is 298 K and the total system pressure of the gas headspace is a constant 1.01 * 104 pa. The cell has a cross sectional area of 0.8 cm2, a height of 13cm and a liquid depth of 3 cm. Using diffusivity data given in Appendix J of W3R plot the molar flux (mol m2 s-1) and the liquid toluene level (cm) vs. time (hr-1). How long does it take for the toluene to be depleted? At 298 K, the vapor pressure and the specific gravity of toluene are 28.4 mm Hg and 0.866, respectively.
You are driving north on 107th Avenue at a speed of 32.3 mph. A police car whose siren produces a sound at a frequency of 513 Hz is approaching from the opposite direction at a speed of 61 mph, At what frequency do you year the siren
The plates of a spherical capacitor have radii 43.7 mm and 45.5 mm. Calculate the capacitance in picofarads
two positive point charges are held in place 0.60 m apart. they are then moved so that their electric potential energy
You throw a ball straight into the air from a height of 4 feet and with a speed of 5.02 m/s, How far are you from the ball, the moment it hits the ground
Find the group velocity of 0.57 MeV protons. Find the phase velocity of 0.57 MeV protons. Find the phase velocity of 0.57 MeV electrons
A storage tank at STP contains 15.0 kgof nitrogen (N2). What is the volume of the tank
An electron of mass 9.11×10?31 leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, Find the Time to reach the grid
A resistance R and a 1.5-H inductance are in series across a 60-Hz ac voltage. What is the ac input voltage
A 0.160 g plastic bead is charged by the addition of 1.00 x 10^10 excess electrons. What electric field strength will cause the bead to hang suspended in the air?
A man doing a slow push-up is approximately in static equilibrium. His body is horizontal, with his weight of 757 N supported by his hands and feet, how far from the shoulders is the man's center of gravity
What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to five times the Earth's radius before coming to rest momentarily
Multiple-Concept Example 10 provides one model for solving this type of problem. Two wheels have the same mass and radius of 4.2 kg and 0.39 m, respectively. Find the net external torque that acts on each wheel
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