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In deriving Bernoulli's equation, we equ...

In deriving Bernoulli's equation, we equated the work done on the fluid in the tube to its change in the potential and kinetic energy. (a) What is the largest average velocity of the blood flow in an artery of diameter `2 times 10^-3 m` if the flow must remain laminar? (b) Do the dissipative forces become more important as the fluid velocity increases? Discuss qualitatively?

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The pressure drop is greater
(b) More important with increasing flow velocity
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What is the largest average velocity of blood flow in an artery of radius 2 times 10^-3 m if the flow must remain laminar?(b) What is the corresponding flow rate?(take viscosity of blood to be 2.084 times 10^-3 Pa s )

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDeltaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. Free energy change of Hg and Mg for the convertion to oxides the slope of DeltaG . T has been changed above the boiling points of the given metal because

For a spontaneous reaction, the free energy change must be negative. DeltaG=DeltaH-TDelaS is the enthalpy change during the reaction. T is absolute temperature, and AS is the change in entropy during the reaction. Consider a reaction such as the formation ofan oxide . M+O_(2) MO Dloxygen is used wp in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids consequently gases have a higher entropy than liquids and solids, in this reaction (entropy or randomness) decreases, hence is negative. Thus, the temperature is raised the DeltaS becomes more negative. Since, TDeltaS is subtracted in the equation, then SG becomes less negative. Thus, the free energy changes increases with the increase in temperature. The free energy changes that occur when one mole of common reactant in this case dioxygen) is we may e plotted graphically against temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. For the conversion of Ca(s) to CaO(s) which of the following represent the DeltaG vs T :

NCERT TELUGU-MECHANICAL PROPERTIES OF FLUIDS -EXERCISE
  1. Does it matter if one uses gauge instead of absolute pressures in appl...

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  2. Glycerine flows steadly through a horizontal tube of length 1.5 m and ...

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  3. In a test experiment on a model aeroplane in a wind tunnel, the flow s...

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  4. Figures 10.23(a) and (b) refer to the steady flow of a (non-viscous) l...

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  5. The cylindrical tube of a spray pump has a cross section of 8.0 cm^2 o...

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  6. A U-shaped wire is dipped in a soap solution, and removed. The thin so...

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  7. Figure 10.24(a) shows a thin liquid film supporting a small weight =4....

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  8. What is the pressure inside the drop of mercury of radius 3.00mm at ro...

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  9. What is the excess pressure inside a bubble of soap solution of radius...

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  10. A tank with a square base of area 1.0 m^2 is divided by a vertical pos...

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  11. A manometer reads the pressure of a gas in an exclosure as shown in fi...

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  12. Two vessels have the same area but different shapes. The first shapes ...

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  13. During blood transfusion the needle is inserted in a vein where the ga...

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  14. In deriving Bernoulli's equation, we equated the work done on the flui...

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  15. What is the largest average velocity of blood flow in an artery of rad...

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  16. A plane is in level fight at constant speed and each of its two wings ...

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  17. In Millikan's oil drop experiment. What is the terminal speed of an un...

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  18. Mercury has an angle of contact equal to 140^@ with soda lime glass. A...

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  19. Two narrow bores of diameters 3.00mm and 6.0mm are joined together to ...

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  20. It is known that density rho of air decreases with height y as rho=r...

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