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Calculate the number of years it takes to pay off loan in one equation, if yearly income is $120,000 and suppose yearly payment is $10,000 and the total debt is $45,000?
The R-134a undergoes a process that increases its volume by 40 percent. Calculate the final temperature and enthalpy of the R-134a.
A particle travels along the circular path x²+y²=r². If the y component of the particle's velocity is Vy=2rcos2t, determine the x and y components of its acceleration at any instant.
The motion of the partice is defined by the realtions r=b(2+cospit) and theta=(pi)t. Where t and theta are expressed in m and radiains. Determine (a) the accleration and velocity of the partice when
What change in the given data would have to be allowed if each set were to be used? Calculate results for at least four different sets and state reasons for your final choice.
If the scrap metal density, in kg/m^3, varies with position z, in m, according to density=7800-360(z/L)^2, determine the reading in the scale, in N.
The clearance between the members is 14 in. Determine the required length L of each splice if a factor of safety of 2.75 is to be achieved.
What is the average cost per kWh with green power during the year? why does green power cost more than conventional power?
The initial pressure and temperature of the air are 400kPa and 200C, respectively, while the final temperature is 100C. Determine the work for the air system and sketch the process.
Determine the static head efficiency required of the turbine if the total pressure of its exhaust is not to be less than 1.6 bar and the exhaust velcotiy is 300 m/s.
What diameter should the hovercraft deck be to operate at this condition, and what will be the resulting hover gap height? Assume the density of air is 1.17 kg/m3.
Knowing that E = 3.2 GPa, that the maximum allowable normal stress is 40 MPa, and that the length of the thread must not increase by more than 1%, determine the required diameter of the thread.
Use the van der Waals equation to calculate pressure p and compression factor z. Are attractive or repulsive forces between Ar atoms dominating under these conditions?
The vessel is heated until the water pressure reaches 8 Mpa. Determine the following properties of water at the final state: temperature, enthalpy, internal energy.
Draw the triangles of velocities for inlet and outlet and find (i) the angles of vane tips (ii) the work done per Newton of flowing water efficiency.
Consider the pumps and turbines to operate adiabatically and to all have isentropic efficiencies of 85%. The net power output of the cycle is 1 x 109 Btu/hr. Calculate the mass flow rate of steam th
What is the gage pressure at the bottom of the tanks? in kPa. What is the absolute pressure at the bottom of the taanks assuming standard atmospheric conditions? in kPa.
he mercury manometer shown here is used to measure this pressure decrease between points A and B at the pipe wall. Answer the questions below for h1 = 19.4 cm and h2 = 3.39 cm. What is the orifice p
A machine is found to vibrate with simple harmonic motion at a frequency of 20Hz and an amplitude of acceleration of 0.5 g. Determine the displacement and velocity of the machine. Use the value of
On the basis of equal cost per unit production, what monthly salary is justfied for B if the foreman gets$3,800 per month and A gets $3,000 per month.
Develop a cost and revenue structure for designing and constructing, operating (occupying) for 10 years, and the selling the home at the end of the 10th year.
Estimate the cost of a 150ft square shell and tube heat exchanger in 2010 when the index value is 1,029 and the appropriate cost-capacity factor is 0.6.
A cylindrical tank of radius R and depth H is filled with water. The tank is open to atmosphere. Derive an expression for the total force acting on the bottom and on the sides of the tank.
Calculate (a) the velocity at the instant the fuel burned out; (b) the maximum altitude reached by the rocket; and (c) the velocity of the rocket on striking the earth. (d) How long was the rocke