Assignment 1 Solution

# Assignment 1 Solution - g If the lengths of the sides of...

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Question 1 a) Intensive properties do not depend on the size (extent) of the system but extensive properties do. b) The fluids whose shear stress is proportional to the velocity gradient are called Newtonian fluids. Most common fluids such as water, air, gasoline, and oils are Newtonian fluids. c) When two identical small glass balls dropped into two identical containers, one filled with water and the other with oil, the ball dropped in water will reach the bottom of the container first because of the much lower viscosity of water relative to oil. d) The pressure inside a soap bubble is greater than the pressure outside, as evidenced by the stretch of the soap film. e) The pressure inside a soap bubble is greater than the pressure outside, as evidenced by the stretch of the soap film. f) No, the absolute pressure in a liquid of constant density does not double when the depth is doubled. It is the gage pressure that doubles when the depth is doubled.

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Unformatted text preview: g) If the lengths of the sides of the tiny cube suspended in water by a string are very small, the magnitudes of the pressures on all sides of the cube will be the same. h) The horizontal component of the hydrostatic force acting on a curved surface is equal (in both magnitude and the line of action) to the hydrostatic force acting on the vertical projection of the curved surface. The vertical component of the hydrostatic force acting on a curved surface is equal to the hydrostatic force acting on the horizontal projection of the curved surface, plus (minus, if acting in the opposite direction) the weight of the fluid block. i) The magnitude of the buoyant force acting on a submerged body whose volume is V is expressed as F B =ρg V , which is independent of depth. Therefore, the buoyant forces acting on two identical spherical balls submerged in water at different depths will be the same. Question 2 Question 3 Question 4...
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## This note was uploaded on 10/23/2009 for the course HES 2340 taught by Professor Tomedwards during the Three '09 term at Swinburne.

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Assignment 1 Solution - g If the lengths of the sides of...

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