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Since meat is higher on the food chain than grains, the more calories you get from meat, the more agricultural land you use. Using the arable land area in your state and data from [30] (which concludes that 5.6 GJ metabolized energy is produced annually per hectare for meat and that 41.4 GJ of metabolized energy is produced annually per hectare for gain), estimate
a. How many vegetarians could you feed with land available in your state? Determine this as a number (percentage of 2011 population) and percentage of estimated population in 2030.
b. Repeat this estimate for the average American diet (the typical American gets two-thirds of his or her calories from meat and one-third from grain)
the rods ab and cd each have a 30-mm diameter and are 1m long. the modulus of the rods is 28 gpa. the rods are
Clearly identify and justify the criteria used for the comparison and the logic behind the scoring process. Prepare a 15-minute briefing and an executive summary suitable for a conference with your local congressperson.
A rocket is launched horizontally (x direction) at an initial velocity of 100 m/s and travels along a parabolic path given by y 2 = (100x) km. If the x component of acceleration is ax = (2t + 15) m/s2 , where t is in seconds, determine magnitude and ..
1 k mol of n2 gas ideal is contained in a piston initially at 300k with a volume of 0.1 m3. the piston cylinder is well
an automobile is found to have a natural frequency of 20 rads without passengers and 17.32 rads with passengers of mass
a 32.2 lb object is dropped from a 100 feet building. determine the velocity and the kinetic energy at the 50 feet
Air at 900 kPa and 300 C is expanded adiabatically in a closed system to 100 kPa. Assume constant specific heats. Also complete the problem assuming Variable specific Heats. Determine the minimum possible final temperature of the gas (isentropic case..
a transistor in a stereoamplifier dissipates 0.4 w within a housing that is cylindrical radius 8 mm and height 8 mm.
Find the time it takes to cool the center of the billet to a temperature of 250°C, assuming: (a) Lumped Capacitance (b) Billet is not lumped.
Consider steady-state conditions for which heat is uniformly generated at a volumetric rate q due to passage of an electric current. Using the energy balance method, derive finite-difference equations for nodes 1 and 13.
suppose the rocket was initially on a circular orbit around earth with a period of 1.2 days.a what is its orbital
Calculations of the entire 360 degree stroke of your engine including, joint forces, shaking forces, and all calculations you used to balance your design and associated justifications.
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