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A golfer wants to hit a ball a horizontal distance of 130 meters with a maximum height of 20 meters above his tee-off point and land on a spot that is 10 meters above the tee-off point.
Determine the total mechanical energy of the river water per unit mass and the power generation potential of the entire river at the location.
After a time t' it maintains a constant speed so that when t=160s it has traveled 2000 ft. Determine the time t' and draw the v-t graph for the motion (if you cant draw the graph no problem).
The two electrons in a helium atom are separated by about 0.10 nm and the separation between either electron and the nucleus is about 0.050 nm. What is the total electric potential energy of the ato
A converging-diverging nozzle is designed to operate with an exit Mach number of 1.75. The nozzle is supplied from an air reservoir at 6.9 MPa. Assuming one dimensional flow, calculate maximum back
The piston is in the leftmost position contacting the left side of the cylinder. The heat is transmitted to the gas through the left side of the cylinder. Find specific heat C exhibited by the gas i
Is this a power cycle or a refrigeration/heat pump cycle? Find the Work, W, and the heat transfer, Q, in Btu at each process. Then find the sum of the work and heat transfer.
If he sits up and raises his feet just as he crosses the vertical line, so that his center of gravity is 9 feet from point A, what angle with the vertical will the swing make when the swing reaches
The speed limit on a country road is 70 km/hr. The radius of curvature for a bridge on the road is 50 meters. Was the ticket deserved? Show why or why not.
A freezer is 1 m wide and deep, and 2 m high, and must operate at -10 degree C when the ambient air is at 30degree C. What thickness of polysterene is required if the load on the refrigeration unit
Determine (a) the mass flow rate of condensate, in lb/min. (b) the rate of heat transfer, in Btu/min. (c) the rate of entropy production, in Btu/R - min. (d) the rate of exergy destruction, in Btu/m
A single mixed stream exits at 1 bar. cp,i for air and helium is 1.005 and 5.193 kJ/kg.K, respectively. Ignoring kinetic and potential energy effects and heat transfer and external work, determine f
Knowing that the allowable maximum shearing stress in shaft AE is 9000 psi, determine the smallest permissible diameter of shaft AE.
Write a user-defined function that calculates grade point average (GPA) on a scale of 0 to 4, where A=4 B=3 C=2 D=1 E=0 and. For the function name and arguments use av = GPA(g,h).
If the material modulus values are E=220 kN/mm2 and G=90 kN/mm2, estimate the extension in section dimensions due to the load in the axial direction.
If the applied force P=2000lbs determine the maximum horizontal deflection of the bottom of the beam and the maximum normal stress in the beam.
What is the mass transfer rate on both the top and bottom surfaces(kg/s). Are they equal and why? Estimate how long it will take for the oil to disperse from the surfaces given the initial oil layer i
Perform a complete analysis of the cycle to determine the properties at each state point, the heat transfer and work of each process, and the net work and thermal efficiency.
Analyze the cycle using air standard assumptions that account for variation in specific heats. Determine the mass flow rate of air required to produce 60 MW.
When the total water volume is 0.2m3, the pressure is 1MPa. Heat is now added to the water at a rate of 5kw until the total water volume is 0.2m3. What is the final temperature of the water?
You are to select a refrigerator for frozen food processing facility. The freezing of the food requires a heat rate of 250kw at a temperature of -20C. you will reject heat to the atmosphere whose te
Assume the mouth of the container is narrow enough that in effect w have a 1 inch stagnant gas. Will the alcohol content of the solution change significantly in 1 day (Diffusivity for this system i
Estimate the safety factor with respect to infinite fatigue life for (a) a torque fluctuating between 0 and 60 lb.ft, (b) a completely reversed torque of 30 lb.ft.
Determine the friction force F and the acceleration of the center of mass. Model the wheel as a thin circular disk.
Calculate the value of mass transfer coefficient and the flux for mass transfer from a sphere of naphthalene to air at 45C and 1 atm abs flowing at a velocity of 0.305 m/s.