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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?
In the figure below a 21 V battery is associated across capacitors of capacitances C1 = C6 = 4.0 μF and C3 = C5 = 2.5C2 = 2.5C4 = 4.0 μF. What are the (a) potential V3 across and (b) charge q3 (in C) on capacitor 3? (a) NumberUnitsV (b) NumberUnitsC
An airplane flies due south at 190-km/h relative to the air. There is a wind blowing at 73.0 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground.
You send a beam of light from a material with index of refraction 1.19 into an unkown material. In order to help identify this material, What is the index of refraction of the unknown material
question magnesium metal reacts with hydrochloric acid to form aqueous magnesium chloride and hydrogen gas. an excess
A +6.00 µC charge is moving with a speed of 8.50 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 78.0 A in a direction opposite to that of the moving charge. Find the magnitude and directio..
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Consider a pump that is required to compress air in a factory. The cylinder in the pump has an inner diameter of 2.00 cm and length 60.0 cm. Calculate the volume and temperature of the compressed air
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The maximum kinetic energy of photoelectrons is 2.80eV . When the wavelength of the light is increased by 50%, the maximum energy decreases to 1.50eV. What is the work function of the cathode
a) Write an expression for the magnitude of the force, F, that propels the dragster forward in terms of the variables provided. b) If the track has length L, select the correct symbolic equation for how fast Vf the dragster is traveling when it fi..
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