The following algebraic equation captures the relationship between vapor pressure, ?, and temperature, ?, for a real gas:  lnP = A + B/T +Cln(T) + DT2 Where A,B,C,D are constants.  If A>0, B<0, C>0, D>0, Is this equation guaranteed to have atleast one real valued solution for T in the interval (0,∞)?

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fet), force force, f 10 Newt. m2 f k, 10sec m, = 10 kg, ma= 20 kg , b= 20 Newton m/sec k, = 30 Newton kz = 60 Newton z, and z are measured with respeet to eguilibrium conditions and all imitial conditions are zero, 1) Write the Newton's second Lau for m, amd m2 2) Derive a statespace represrentation of the conditions : eystem fallowing 2a) only z, is measured 26) only z, is measured 2c) (2,-z,) is measured. un der 3) Derive the following transfor fumetione fG) z,(5) Go G,6) ? G6) ? 4) Describe a mechanical device that can be used to implement the external force fee) as shoun'a bove. 5) Using (Csim) function of MATLAB, plot z,(t), 2, (t)- =, (+)] Zz (t) and

*3.2 PQ1 A 100 mm diameter sphere contains an ideal gas at 20°C. Apply the grid method (p. 9) to calculate the density in units of kg/m³. a. Gas is helium. Gage pressure is 20 in H,O. b. Gas is methane. Vacuum pressure is 3 psi.

A population numbers 13,000 organisms initially and grows by 16.2% each year. Suppose P represents population, and t the number of years of growth. An exponential model for the population can be written in the form P = a · b' where P = Preview Get help: Video Video

A hot water leak in one of the faucets of your apartment can be very wasteful. A continuous leak of one quart per hour​ (a "slow"​ leak) at 155 degrees°F causes a loss of 1.81 million Btu per year. Suppose your water is heated with electricity. a. How many pounds of coal delivered to your electric utility does this leak equate to if one pound of coal contains 12,000 Btu and the boiler combustion process and water distribution system have an overall efficiency of 28​%? b. If a pound of coal produces 1.81 pounds of CO2 during the combustion​ process, how much extra carbon dioxide does the leaky faucet produce in a​ year

Need help with engineering problem.   Match the RTT term with its explanation: A: ddt(∫CVβρdᏉ)   B: ∫CSβρVcosθdAout   C: ∫CSβρVcosθdAin     A.       B.       C.       Match one of the following answers below to each letter.   A change within the control volume   Outflow of B from the ontrol volume   Inflow of B to the control volume

Thermodynamics. Help me to answer this question  By referring to the thermodynamics tables, calculate the missing properties in the following table and determine the phase for each subtance.

An incompressible fluid oscillates harmonically (V = Vosinut, where Vis the velocity) with a frequency of 9 rad/s in a 6-in.-diameter pipe. A 1/5 scale model is to be used to determine the pressure difference per unit length, Ap, (at any instant) along the pipe. Assume that Api= f(D, Vo, w, t, u, p) where D is the pipe diameter, w the frequency, t the time, the u fluid viscosity, and p the fluid density. If the same fluid is used in the model and the prototype, at what frequency should the model operate? Wm i rad/s