3. What is the unit of Helmholtz free energy? a) Kelvin b) Joule c) Kilowatt d) Newton

2. Newton's second law can be written in mathematical form as EF = ma. Within the summation of forces, EF. are/is not included. a) internal forces b) external forces c) weight d) all of the above

A potential difference of 120 V is established beween two parallel metal plates. The magnitude of the charge on each plate is 0.020C. What is the capacitance of this capacitor? a) 170 uC b) 24 uC c) 7.2 uC d) 0.12 C e) 2.4 C Please show your work Thanks

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1. How many unknown support reactions are there in this problem? 40 Ib/ft A) Two forces and two couple moments B) One force and two couple moments C) Three forces D) Three forces and one couple moment 30 4 ft 3ft 2. A general system of forces and couple moments acting on a rigid body can be reduced to a A) single force B) single moment C) single force and two moments D) single force and a single moment 3. The three scalar equations . Σ Fκ-ΣFvΣ Μo-0 , are equations of equilibrium in two dimensions. A) Incorrect B) The only correet C) The most used D) Not sufficient

Which of the following is not a unit of pressure?       a)  N/m2   b)  mbar   c)  Pascal   d)  in2

Assume 8 lb of a substance receive 240 Btu of heat at constant volume and undergo a temperature change of 150oF. Determine the average specific heat of the substance during the process.a) 0.5 Btu/lboF                                                                                  c)0.40 Btu/lboFb) 0.3 Btu/lboF                                                                                   d)0.20 Btu/lboF

0:YV Homework 1.pdf > 1. Convert the following: a) 120 g mol ol NaCl to g. b) 120 g of NaCI to g mol. c) 120 lb mol of NaCl to lb. d) 120 lh of NaCl to Ih mol 2. Convert 39.8 kg of NaCl per 100 kg of water to kg mol of NaCl per kg mol of water. 3. How many Ib mol of NaNO, are there in 100 lb? 4. The density of a material is 2 kg/m'. What is its specific volume? 5. An empty 10 gal tank weighs 4.5 Ib. What is the total weight of the tank plus the water when it is filled with 5 gal of water? 6. If you add 50 g of sugar to 500 ml of water, how do you calculate the density of the sugar solution? 7. For ethanol, a handbook gives: sp. gr. 60°F = 0.79389. What is the density of ethanol at 60 F? 8. The specific gravity of steel is 7.9. What is the volume in cubic feet of a steel ingot weighing 4000 Ib? 9. The specific gravity of a solution is 0.80 at 70°F. How many cubic feet will he occupied hy 10X0 Ih of the solution at 70'F? 10. A solution in water contains I.704 kg of HNOkg H;0, and the…

The viscosity of chloroform at several temperatures is given on the table. Determine the viscosity at 50 °C. T °C 10 20 30 40 Ƞ millipoise 6.25 5.63 5.10 4.64 a) 3.25 millipoise b) 4.25 millipoise c) 5.25 millipoise d) 1.25 millipoise e) None of the above

The pressure enclosed by the piston-cylinder system is P1, the atmospheric pressure is given by Patm, mass of the piston is mp, and the cross sectional area of the piston is A. The piston-cylinder force balance can be expressed as: A)  P1 = Patm + mp A B)  P1 = Patm C)  P1A = PatmA + mp g D)   P1A = PatmA