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A 2D rectangular piston of width L = 0.05 in and height H = 0.1 m is sealed inside a slightly wider rectangular container of width L + 26 (6 = 0.0005 m). The container is filled with oil of viscosity p = 0.01 kg m-1 The block is moved upwards at velocity V = 0.5 m s'. You may neglect gravity forces for this problem, and assume that the flow is effectively steady.
a. Derive the formula for the y-velocity in the gap between the block sidewall and the larger container.
b. As the block moves upwards, the incompressible oil is forced downward through the two side gaps to ensure mass conservation. What is the pressure gradient dP/dy due to this constraint?
c. What is the force (per unit depth into the page) required to move the block upward at the specified velocity?
A book is sitting on a table. According to Newton's third law, which two forces are an action-reaction pair? a) The normal force of the table on the book and the gravitational force on the book b) The normal force on the book from the table and the..
When she stands 3.5m from you, what is the height of her image formed on the retina of your eye, What is the height of her image when she is 4.5 m from you
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A professional golfer is examining a video of a practice swing. The high-speed footage shows that his club is in contact with the ball (which was initially at rest on the tee) for only 0.471 milliseconds, and the radar gun clocks the speed of the ..
The drawing shows two situations in which charges are placed on the x and y axes. find the magnitude of the net electric field at the origin
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A 5 g sample of solid carbon dioxide evaporates into a 0.1 L vessel at room temperature (298K). Compute the work done when the system is then allowed to expand (a) isothermally against a constant pressure of 1 atm and (b) isothermally and reversibly ..
A 0.1A current is charging a capacitor that has square plates 5cm on each side. Find the time rate of change of electric flux between the plates
A certain Physics teacher is hungry! He sets a snare (trap)outside his class for rabbits An unsuspecting student accidentallysteps into the trap and is pulled upward at an angle of 60 degrees with a force of 2000 Newtons. What id the resultant for..
An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through a slot at the outside edge of the wheel, as in Fig. 10-31, travels to a distant mirror, and returns to the wheel just in time to ..
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