The Colburn equation for heat transfer is:2/30.0230.2DGF';u is viscosity, lb h ft; k is thermal conductivity,where C, is heat capacity, Btu lbBtu h ft2 (°F ft); D is pipe diameter, ft; and G is mass velocity per unit area, lb h' ft.The Colburn equation is dimensionally consistent. What are the units and dimensions ofthe heat transfer coefficient, h?--1

Answered: Image /qna-images/answer/8e7ef6c7-f6ba-4979-b1bf-2a999f9907a6.jpg

Answered: 0.023 k 0.2 DG here C, is heat…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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velocity (V), as well as the ball diameter (d) and its angular speed (). It is assumed that the he drag force Fp acting on a baseball is a finstion ofc the air density (p), viscosity (µ) and ball spins about an axis which is fixed with respect to the ground. Determine the similarity (Pi) groups and their functional dependence. Select p, V and d as "repeating variables".
For the given velocity triangle, if you know that at the inlet, alpha is -20, beta is 59, the relative velocity is 78 m/s, r= 20 cm, rotation speed is 180 rpm. At the exit, alpha is 30 and the absolute velocity is 35 m/s. Find the following: 1. the relative velocity at the exit in (m/s) 2. the work in (KJ/Kg) Vw1 U, V1 V1 V2 Uz Center of wheel
Surface tension is due to uneven molecular attraction between immiscible fluid media and solid surface. Its importance is governed by dimensionless parameter Which of the Inertia force called Weber number given by We = Surface tension force™ following statements are correct? (i) Surface tension becomes important when the length scale L is small such as in ink jet printing, coating of thin film, oxygenation of water by falling rain drops. (ii) 111 Super-hydrophobicity can be achieved by micro/nano texturing of surface such as in lotus leave, butterfly and dragonfly wing. During oil spill in ocean, oil floats and spreads out due to gravity. By conservation of mass, the oil film becomes thinner as it spreads. Finally, the surface tension force becomes important causing the formation of tiny oil droplets. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above
Q1. Honey is a very widely used ingredient in cooking all around the world. Many commercial honey manufacturers heat treat honey to remove harmful bacteria that may be present. The density and viscosity of the honey varies with temperature, as shown in table 1. Temperature K 293 298 303 308 313 318 323 Density kg/m³ 1403 1398 1393 1388 1383 1378 1373 Viscosity Pas 55.66 46.45 37.99 30.28 23.32 17.11 11.65 Table 1: Fluid properties of honey. A particular processing facility heats and sterilises 500 kg of unprocessed honey every 30 minutes. The unpro- cessed honey is stored in large vats, then pumped though pipes into heating units before being pumped through another pipe to be bottled. The pipe carrying the honey from a storage container, which is 11 m tall, to a heating unit is 5 m long and has a diameter of 10 cm. Prior to being heated the honey is kept at 25°C. (a) What is the pressure difference between the top and bottom of a storage vat when it is full? (b) What is the volume flow…
A::V Gmail > A docs.google.com EE Q 3: A tank filled with oil,lf the total weight is(2 KN) and weight of tank only is (200 N) and volume of the tank is (190 L) , Find : Mass density ,specific weight ,specific gravity ,specific volume for the oil. 0.947 KN/m3,9.6534 kg/m3 , 0.01035 m3/kg , 9.65 94.7 KN/m3 ,96.534 kg/m3 , 0.01035 m3/kg , 1.965 9.47 KN/m3 ,965.34 kg/m3 , 0.01035 m3/kg , 0.965 Page 2 of 2 Back Submit Never submit passwords through Google Forms. This form was created inside of Mustansiriyah University. Report Abuse Google Forms
Density is defined as mass per unit volume (Fig. 1-25). Density: (kg/m) (1-4) The reciprocal of density is the specific volume v, which is defined as vol- ume per unit mass. That is, (1-5) For a differential volume element of mass ôm and volume &V, density can be expressed as P The density of a substance, in general, depends on temperature and pres- sure. The density of most gases is proportional to pressure and inversely proportional to temperature. Liquids and solids, on the other hand, are essentially incompressible substances, and the variation of their density with pressure is usually negligible. At 20°C, for example, the density of water changes from 998 kg/m' at I atm to 1003 kg/m' at 100 atm, a change of just 0.5 percent. The density of liquids and solids depends more strongly on temperature than it does on pressure. At I atm, for example, the density of water changes from 998 kg/m at 20°C to 975 kg/m at 75 C, a change of 2.3 percent, which can still be neglected in many…
Thermal conductivity k is a measure of the ability of a material to conduct heat. For conduction heat transfer in the x-direction through a surface normal to the x-direction, Fourier’s law of heat conduction is expressed as: Q=-kA.dT/dx where ?̇ is the rate of heat transfer and A is the area normal to the direction of heat transfer. Determine the primary dimensions of thermal conductivity (k). Look up a value of k and verify that its SI units are consistent with your result. Write a set of primary SI units for k.
**Problem 1.15 Suppose you wanted to describe an unstable particle, that spon- taneously disintegrates with a "lifetime" t. In that case the total probability of finding the particle somewhere should not be constant, but should decrease at (say) an exponential rate: too P(t) = | V(x,1)1²dx = e=1/*. -0- A crude way of achieving this result is as follows. In Equation 1.24 we tacitly assumed that V (the potential energy) is real. That is certainly reasonable, but it leads to the "conservation of probability" enshrined in Equation 1.27. What if we assign to V an imaginary part: V = Vo – ir, where Vo is the true potential energy and r is a positive real constant? (a) Show that (in place of Equation 1.27) we now get dP 21 = --P. dt (b) Solve for P(1), and find the lifetime of the particle in terms of r.
For a venturi meter given below, the volumetric flow rate is defined in terms of the geometrical parameters, the density of working fluid (p), and density of the manometer liquid (pm) as 4. Q = f(D, D2, A2, g, h, Pmv Pr) %3D Write down the balance equations and show your work to end up with an expression for the volumetric flow rate in terms of the variables defined above.
Consider the liquid ina barometer whose coefficient of volume expansionis 5,5 x 10*C Find the relative change in liquid's height if the temperature charges by 13 °Cwhile the pressure remains constant, Neglect the expansion of the glass tube. Number Units This answer has no units * (destrees) kg Hint m/s
HW-1-.docx -> Q1/ complete the dimensional formula and SI units for table. US Physical Quantity SI. No Dimensional Formula S.I Unit customary unit Area (A) work (w) 3 Density (d) 4 Speed (s) stress (6) Acceleration (a) Q2/ Suppose we are told that the acceleration a of a particle moving with uniform speed v in a circle of radius r is proportional to some power of r, say r", and some power of v, say vm , also some power of mass, say m". Determine the values of n and m and o Q3/ Show that the expression (x, = x +v, t+ % a t) is dimensionally correct, where X, and x, are the position and a is the acceleration, and t is the time, v is the velocity.
re | https://eagleonline.hccs.edu/courses/156500/quizzes/969413/take Question 39 5 pts Perform the following temperature unit conversions: (a) Convert a temperature of 52°C to 'F °R, and K. (b) Convert a temperature of -40°F to °C, K, and °R. Relevant formulae are given below T (°C) = T (K) - 273.15 T ('F) = T (°R) - 459.67 T(F) = 1.8T (°C) + 32 Upload Choose a File 5 pts tion 40

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