Problem 1CP: What is the difference between a dimension and a unit? Give three examples of each. Problem 2CP: List the seven primary dimensions. What is significant about these seven? Problem 3P: Write the primary dimensions of the universal ideal gas constant Ru(Hint: Use the ideal gas Ian,... Problem 4P: Write the primary dimensions of each of the following variables from the field of thermodynamics,... Problem 5P Problem 6P Problem 7P Problem 8P: On a periodic chart of the elements, molar mass (M), also called atomic weight, is often listed as... Problem 9P Problem 10P: The moment of force(M)is formed by the cross product of a moment arm (r) and an applied force (F),... Problem 11P: You are probably familiar with Ohm law for electric circuits (Fig. P7-11), where E is the voltage... Problem 12P: Write the primary dimensions of each of the following variables, showing all your work: (a)... Problem 13P Problem 14P: Thermal conductivity k is a measure of the ability of a material to conduct heat (Fig. P7-14). For... Problem 15P: Write the primary dimensions of each of the fo1lowin variables from the study of convection heat... Problem 16P Problem 17CP: Explain the law of dimensional homogeneity in simple terms. Problem 18P Problem 19P Problem 20P: An important application of fluid mechanics is the study of room ventilation. In particular, suppose... Problem 21P Problem 22P Problem 23P: In Chap. 4, we defined the material acceleration, which is the acceleration following a fluid... Problem 24P: Newton's second law is the foundation for the differential equation of conservation of linear... Problem 25CP: What is the primary reason for nondimensionalizing an equation? Problem 26P Problem 27P: In Chap. 9, we define the stream function for two-dimensional incompressible flow in the xy-plane.... Problem 28P: In an oscillating incompressible flow field the force per unit mass acting on a fluid particle is... Problem 29P Problem 30P: Consider ventilation of a well-mixed room as in Fig. P7-21. The differential equation for mass... Problem 31P: In an oscillating compressible flow field the volumetric strain rate is not zero, but varies with... Problem 32CP: List the three primary purposes of dimensional analysis. Problem 33CP: List and describe the three necessary conditions for complete similarity between a model and a... Problem 34P: A student team is to design a human-powered submarine for a design competition. The overall length... Problem 35P: Repeat Prob. 7-34 with all the same conditions except that the only facility available to the... Problem 36P: This is a follow-tip to Prob. 7-34. The students measure the aerodynamic drag on their model... Problem 37EP: The aerodynamic drag of a new sports car is lo be predicted at a speed of 60.0 mill at an air... Problem 38EP: This is a follow-tip to Prob. 7-37E. The aerodynamic drag on the model m the wind tunnel (Fig.... Problem 39P: Consider the common situation in which a researcher is trying to match the Reynolds number of a... Problem 40P Problem 41EP: Some students want to visualize flow over a spinning baseball. Their fluids laboratory has a nice... Problem 42EP: A lightweight parachute is being designed for military use (Fig. P7-42E). Its diameter D is 20 ft... Problem 43P Problem 44P Problem 45P Problem 46P: The Richardson number is defined as Ri=L5gV2 Miguel is working on a problem that has a... Problem 47P Problem 48P Problem 49P: A stirrer is used to mix chemicals in a large tank (Fig. P7-49). The shaft power W. supplied to the... Problem 50P Problem 51P: Albert Einstein is pondering how to write his (soon-to-be-famous) equation. He knows that energy E... Problem 52P: Consider filly developed Couette flow-flow between two infinite parallel plates separated by... Problem 53P: Consider developing Couette flow-the same flow as Prob. 7-2 except that the flow is not yet... Problem 54P: The speed of sound c in an ideal gas is known to be a function of the ratio of specific heats k,... Problem 55P: Repeat Prob. 7-54, except let the speed of sound c in an ideal gas be a function of absolute... Problem 56P: Repeat Prob. 7-54, except let the speed of sound c in an ideal gas be a function only of absolute... Problem 57P Problem 58P: When small aerosol particles or microorganisms move through air or water, the Reynolds number is... Problem 59P Problem 60P Problem 61P Problem 62P: An incompressible fluid of density and viscosity flows at average speed V through a long,... Problem 63P Problem 64P: In the study of turbulent flow, turbulent viscous dissipation rate (rate of energy loss per unit... Problem 65P: Bill is working on an electrical circuit problem. He remembers from his electrical engineering class... Problem 66P: A boundary layer is a thin region (usually along a wall) in which viscous forces are significant and... Problem 67P: A liquid of density and viscosity is pumped at volume flow rate V through a pump of diameter D.... Problem 68P: A propeller of diameter D rotates at angular velocity in a liquid of density and viscosity . The... Problem 69P: Repeat Prob. 7-68 for the case an which the propeller operates in a compressible as instead of a... Problem 70P Problem 71P Problem 72P: Consider a liquid in a cylindrical container in which both the container and the liquid are rotating... Problem 73P Problem 74P: One of the first things you learn in physics class is the law of universal gravitation. F=Gm1m2r2 ,... Problem 75CP Problem 76CP Problem 77CP: Define wind tunnel blockage. What is the rule of thumb about the maximum acceptable blockage for a... Problem 78CP Problem 79CP Problem 82P: In the model truck example discussed in Section 7-5, the wind tunnel test section is 3.5 m long,... Problem 83P Problem 84EP: A small wind tunnel in a university's undergraduate fluid flow laboratory has a test section that is... Problem 85CP: There are many established nondimensional parameters besides those listed in Table 7-5. Do a... Problem 86CP Problem 87CP: For each statement, choose whether the statement is true or false and discuss your answer briefly.... Problem 88P Problem 89P Problem 90P Problem 91P Problem 92P: From fundamental electronics, the current flowing through a capacitor at any instant of time is... Problem 93P Problem 94P Problem 95P: The Archimedes number listed in Table 7-5 is appropriate for buoyant pnrPcks in a fluid. Do a... Problem 96P Problem 97P Problem 98P Problem 99P Problem 100P Problem 101P: Repeal Prob. 7-100 except for a different dependent parameter, namely, the time required to empty... Problem 102P: A liquid delivery system is being designed such that ethylene glycol flows out of a hole in the... Problem 103P Problem 104P: Au aerosol particle of characteristic size DPmoves in an airflow of characteristic length L and... Problem 105P Problem 106P Problem 107P Problem 108P Problem 109P Problem 110P Problem 111P: Repeat pall (a) of Prob. 7-110, except instead of height h. find a functional relationship for the... Problem 112P: Sound intensity I is defined as the acoustic power per unit area emanating from a sound source. We... Problem 113P: Repeal Prob. 7-112, but with the distance r from the sound source as an additional independent... Problem 114P: Engineers at MIT have developed a mechanical model of a tuna fish to study its locomotion. The... Problem 116P Problem 117P Problem 118P: An electrostatic precipitator (ESP) is a device used in various applications to clean particle-laden... Problem 119P Problem 120P Problem 121P Problem 122P Problem 123P Problem 124P Problem 125P: The primary dimensions of kinematic viscosity are (a) mL/t2 (b) mL/t (c) L2/t (d) L2/mt(e) L/mt2 Problem 126P: There at four additive terms in an equation, and their units an given below. Which one is not... Problem 127P Problem 128P Problem 129P Problem 130P: A one-third scale model of a car is to be tested in a wind tunnel, The conditions of the actual car... Problem 131P Problem 132P: A one-third scale model of an airplane is to be tested in water. The airplane has a velocity of 900... Problem 133P Problem 134P Problem 135P: Consider a boundary layer growing along a thin flat plate. This problem involves the following... Problem 136P format_list_bulleted