explain when is
1- foced covection is more than natural convection?
2- natural convection is more than foced convection?
explain when is 1- foced covection is more than natural convection? 2- natural convection is more...
write about (mass transfer free convection (natural convection)) 1-equations 2- conclusion
0 In spite of being forced', a forced convection is not as efficient as free convection in removing heat from a vertical hot plate. True / False (ü) Computer components are designed such that the are cooled due to natural convection. This cooling will be even more effective if the computer is on the space station. True / False (ii) Birds take advantage of natural convection while soaring. True / False (iv) A fictitious planet similar to earth has an...
(0) In spite of being 'forced, a forced convection is not as efficient as free convection in removing heat from a vertical hot plate. True / False (ii) Computer components are designed such that the are cooled due to natural convection. This cooling will be even more effective if the computer is on the space station. True / False (iii) Birds take advantage of natural convection while soaring. True / False (iv) A fictitious planet similar to earth has an...
How does a rapid-thermal-exchange device utilize convection? A : More than one of these are examples of convection B : None of these are examples of convection C : Water circulates through the metal plate and removes heat D : Cooled blood circulates through the body, lowering body temperature E : Heat from the blood passes through a metal plate
Explain
Convection 1. Describe the factors that affect the value of the convection coefficient 2. Explain why and how velocity and thermal boundary layers form 3. Explain how turbulence enhances convection heat transfer 4. Describe the significance of the Reynold's number, Nusselt number, and the Prandtl number 5. List common situations where external convection occurs 6. Explain the importance of the film temperature and use it to specify thermophysical properties of a fluid 7. Explain the significance of boundary layer...
2. Perform the integral method in the case of natural convection on an isothermal vertical wall. Present an momentum equation and boundary conditions. Do not solve the equation. (30 pt)
2. Perform the integral method in the case of natural convection on an isothermal vertical wall. Present an momentum equation and boundary conditions. Do not solve the equation. (30 pt)
There is more than one isotope of natural uranium. If a researcher isolates 0.6 mg of the relatively scarce 235U and finds this mass to have an activity of 72.0 Bq, what is its half-life in years? Please explain, other answers for this same question have been confusing about where their numbers came from.
Explain why the first 2-3 minutes of aerobic (steady-state) exercise feels more difficult than when you are in the middle of the exercise.
Explain why 2 extractions with 2 smaller volumes of solvent is more effective than 1 larger extraction.
statements as true or false. 1. All else equal, countries with more natural resources have a higher GDP per capita than those with few natural resources 2. Over the past two hundred years, improvements in productivity have offset lost productivity reduction due to less land being available. 3. The key to prosperity in the 20th century is an economy rich in natural resources. 4. Human and physical capital are only beneficial to an economy when there is an abundance of...