3.1 Estimate the mass-transfer coefficient and effective film t... | Filo (2024)

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The speed (V) of wave on surface of water is given byV=2πaλ​+ρλ2πb​​where λ is the wavelength of the wave and ρ is density of water. a is a constant and b is a quantity that changes with liquid temperature.(a) Find the dimensional formulae for a and b.(b) Surface wave of wavelength 30mm have a speed of 0.240ms−1. If the temperature of water changes by 50∘C, the speed of waves for same wavelength changes to 0.230ms−1. Assuming that the density of water remains constant at 1×103kgm−3, estimate the change in value of ' b ' for temperature change of 50∘C

At 1 atmospheric pressure, 1.000g of water having a volume of 1.000cm3 becomes 1671cm3 of steam when boiled. The heat of vaporization of water at 1 atmosphere is 539cal/g. What is the change in internal energy during the process?

A force P of magnitude 200N acts along the diagonal BC of the bent plate shown. Determine the moment of P about point E.

4B-7. A plane-wave tube is to be used to study progressive waves in air. An absorptive termination is needed to prevent reflections from the end. The maximum standing wave ratio, expressed in decibels, that can be tolerated is 2 dB, i.e., 20log10(SWR) = 2 dB. A candidate for the termination is a tough fibrous material whose impedance over a wide frequency range is Z = 540 - j166 MKS rayls. Determine whether this material satisfies the SWR criterion.

Q10 Describe:(a) how xenon-135 concentration changes following an increase and a decrease in the power level of a reactor;(b) how samarium-149 concentration changes following a reactor shutdown from steady-state conditions and following a reactor startup.

Please provide exact Excel functionsABCDEFGHJKTyne would like to be sure that the price she is able to charge for a particular jewelry box reflects the amount of material and time put into it. The information below shows the price, size, and time spent for 8 jewelry boxes.Run a regression on this data using Price as the dependent variable, and Size and Time as the independent variables. Have Excel begin the output at cell J3.Then, fill in the information requested below in the green boxes.2 3 4Y, price ($) S, Size (width) T, Time (hours) 59 4 1 62 4 2 74 6 1.5 80 8 2 72 6 2 22 94 10 109 8 2.5 119 10 2.5 5 6 7 8 9 10 11 12 13 14b 15 16 17 18 19 d 20 21 22 e 23 f 24 25 26 g 27 28|h 29 30 31Y = <