The mean free path λ of a molecule of gas is the average distance it travels before collision with another molecule. It is given by
where m and d are the molecule’s mass and diameter, respectively, and ρ is the gas density. What are the dimensions of constant C for a dimensionally consistent equation?
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
Fox and McDonald's Introduction to Fluid Mechanics
Additional Engineering Textbook Solutions
Applied Fluid Mechanics (7th Edition)
Mechanics of Materials (10th Edition)
Introduction To Finite Element Analysis And Design
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Mechanics of Materials
Manufacturing Engineering & Technology
- The modulus k of a coil spring (force required to stretch the spring a unit distance) can be expressed in equation form as k=(Gr^4)/(4R^3n) in which r and R are lengths and n is a dimensionless number. Determine the dimensions of G (a property of the spring material) .arrow_forwardLet's say that the semiempirical binding energy formula is Eb= aA-bA^2/3 - s(N-Z)^2/A -dZ^2/A^1/3 where a,b,s,d are constants. Imagine that you are in a different universe where there are 3 types of nucleons with spin equal to 1/2 and electric charges equal to +1, -1 and 0. Mass similar to that of a proton. Forces are similar to those of our universe. i) How do equations change for A and Z as a function of N+, N-, No and what is the semiempirical equation for the binding energy as a function of A, Z, and No? ii) At what Z and No do we have the maximum and minimum binding energy for every A? iii) When do we have stable nuclei under beta (β) decay? If "alpha particle" in this situation has N+ = N- = No = 2, what does apply for alpha (α) decay? iv) What does apply for nuclear fission and finally, how would life be in this situation?arrow_forwardI need help figuring out this question, I'm at a loss (step by step helps too):arrow_forward
- The "standard" acceleration (at sea level and 45° latitude) due to gravity is 32.2 ft/s². What force is needed to hold a mass of 8.0 kg at rest in this gravitational field? [express your answer in SI unit with two decimal places]arrow_forwardPravinbhaiarrow_forwardParticles C and D are moving in the positive x-direction, with A behind B initially. Particle A has speed 20 m/S and mass 1 g whilst B has speed 12 m/s and mass 3 g. At some time later the particles coalesce. If momentum is conserved, what is the loss in KE? (A) There is a gain in KE of 24 ] (B) 24] (C) 01 since energy is conserved (D) 0.024]arrow_forward
- .(b). A force acts on a 2.80-kg particle in such a way that the position of the particle as a function of time is given by x = Find the work done by the force during the first 4.0 s. [4,3] [CLO 3] (3t - 4t²+ t³). Answerarrow_forward(b) The resistance R due to the motion of a boat depends on the velocity V, length L, viscosity of water u, density of water p and acceleration due to gravity g. Find and prove the following relationship, R = VLuf μ v2 Lgarrow_forwardSteam enters an adiabatic turbine steadily at 6 MPa and 450 °C and leaves at 500 kPa and 250 °C. If the power output of the turbine is 3.9 MW determine the isentrFopic efficiency of the turbine and the mass flow rate of the steam flowing through the turbine. TI Pi T2 P2 %23arrow_forward
- What is the volume of 92.4 grams of chlorine gas that is at a temperature of 46° C and a pressure of 694 mmHg? (Chlorine, R = 62.4 L- mm Hg/mole K and MW = 70.906 g/ mol) Computation: Show your Solution A lump of ice falls from an airplane as it comes into land. If the ice hits the ground with a vertical speed of 85m/s, what was the height of the plane when the ice fell off? (Assume that friction can be ignored.)arrow_forwardA gas at 20°C may be considered rarefied, deviating from the continuum concept, when it contains less than 101 molecules per cubic millimeter. If Avogadro's number is 6.029 E23 molecules per mole, what absolute pressure (in Pa) for air does this represent?arrow_forward1. A special-purpose piece of laboratory glassware, called a pyncnometer; is used to measureLiquid densities. It has a volume of 25 cc, and a mass of 17 .24 g when it is full of air. Whenfilled with a liquid of unknown density, its mass = 45.00 g. What is the density of this liquid?How large an error do we make if we ignore the mass of the air that was in it when we weighed itand found m = 17.24 g?arrow_forward
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE LPrinciples of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning