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A tube has a length of 0.028 m and a cross-sectional area of 3.4 x 10-4 m2. The tube is filled with a solution of sucrose in water. The diffusion constant of sucrose in water is 5.0 x 10-10 m2/s. A difference in concentration of 2.7 x 10-3 kg/m3 is maintained between the ends of the tube. How much time is required for 5.6 x 10-13 kg of sucrose to be transported through the tube?
In a physics lab, a student accidentally drops a 21.0-g brass washer into an open Dewar of liquid nitrogen at 77.2 K. How much liquid nitrogen boils away as the washer cools from 291 K to 77.2 K? The latent heat of vaporization for nitrogen is 199.1 ..
Two loads are suspended as shown from cable ABCD. Knowing that dC = 0.75 m, determine (a) The distance dB, (b) The components of the reaction at A,
A 500-turn circular coil with an area of 0.0500 m^2 is mounted on a rotating frame, What is the instantaneous emf in the coil at the moment that the normal to its plane is parallel to the field
A ball is thrown towards a vertical wall 44 meter away. Find at what height above the ground will the ball hit wall
find the force required to give a helicopter of mass m an acceleration of 0.25g upward. what would be the apparent
A thin 1.1 millimeter coating of glycerin has been located between two microscope slides of width 1 centimeter and length 4 centimeter. Determine the force required to pull one of the microscope
Assuming a forward contract was entered into on December 16, illustrate what would be the net impact on Car Corp's 2009 income statement related to this transaction?
The charge flowing through a light bulb attached to a 12.0-V battery in 14.0 s is 30.0 C. What is the average power supplied by the battery during this process
A fireworks rocket is launched vertically into the night sky with an initial speed of 40 m/s. find the magnitude and direction of the second piece
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 56%. What is the warmer temperature
You push a crate across a rough floor against a constat force of friction. You first push with a force of 35N, the acceleration of the box is 0.80m/s^2; Find the mass of the box
A refrigerator requires 10 J of work and exhausts 70 J of heat per cycle. What is the refrigerator's coefficient of performance
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