In fluid mechanics, which of the following are true:  (a) Fluid mechanics is the branch of science concerned with stationary fluids  (b) Fluids like water posses only potential energy  (c) The field of fluid mechanics is infinite and endless  (d) It is a branch of physics which concerns the study of liquids and the ways in which they interact with forces  (e) It is a sience concerned with the response of

Oil flows between two parallel plates (Fig. 8.3), one of which is at rest and the other moves with a velocity U. If the pressure is decreasing in the direction of the flow at a rate of 0.10 lbf/ft² per/foot, the dynamic viscosity is 10-31bf-sec/ft2, the spacing of the plates is 2 in. and the volumetric flow per unit width is 0.15 ft2/sec, what is the velocity U?

Units and dimensions are important in any engineering analysis. This problem is about that. In an old heat transfer textbook, you found the following equation for some specific heat transfer problem. Ə²T Q + əx² λ ƏT Ət You know that T is temperature (K) and x is the x-coordinate, which is measured in meters. You also know that t is time (s) and the book uses as the symbol for thermal conductivity, whose unit is W/m.K. What must be the units of Q and B?

The rate of heat loss Qloss through a window or wall is athe function of the temperature difference between insideand outside ∆ T , the window surface area A , and the Rvalue of the window, which has units of (ft 2 .h . ° F)/ Btu.( a ) Using the Buckingham Pi Theorem, find an expressionfor the rate of heat loss as a function of the other threeparameters in the problem. ( b ) If the temperaturedifference ∆ T doubles, by what factor does the rate ofheat loss increase?

P1.48 A thin plate is separated from two fixed plates by very viscous liquids Hi and l, respectively, as in Fig. P1.48. The plate spacings h and h, are unequal, as shown. The contact area is A between the center plate and each fluid. (a) Assuming a linear velocity distribution in each fluid, de- rive the force F required to pull the plate at velocity V. (b) Is there a necessary relation between the two viscosities, l and µz? hị F, V h2 P1.48

Can you please help me with this problem..

Horizontal stream with water with a cross sectional area of 0.1 ft2 and a velocity 40 ft/s has kinetic energy in ft.lbf/sec nearest to:ANswer: 11,7000 Fluid mechanics (please include units)

The characteristic length of the space shuttle is 29 meters and the mean free path of molecules is about 10 meters. Which one of these is true? a)The continuum fluid mechanics is valid but we can not determine fluid properties there b)The fluid properties can not be determined due to high value of mean free path c)The fluid properties can be determined by using continuum approach d)Since molecular theory is valid there, we can determine the properties of the system e)None

Wind provides an increasingly important source of renewable energy in certain locations of the world. In fact, wind was the second largest renewable energy source worldwide (after hydropower!) and provided more than six percent of global electricity in 2020; in the U.S. that number was 8.4%. Suppose that wind turbines can convert up to 30% of the kinetic energy of incoming wind blowing through their blades into electricity (i.e., useful shaft work). In the following, we will analyze the power output of a wind turbine with a diameter of d 80 m placed at an offshore location where the wind blows steadily at an average speed of 20 knots. Explicitly state all relevant approximations or assumptions. = (a) Draw a diagram that includes appropriate elements for assessing the amount of work extracted from the wind turbine. Your diagram should have annotated any known or approximated proper- ties. What is your system and surroundings? What kind of boundary divides these two? Hint: In terms of…

Engineering Fluid mechanics pathlines, streamlines, and streaklines: B.) The pattern produced by smoke rising from a chimney on a windy day is analogous to a pathline or streakline? Explain the definition of each.