Engineering, 02.09.2020 02:01 Lucid7930

There are initially 500 rabbits (x) and 200 foxes (y) on Farmer Oat's property. Use Polymath or MATLAB to plot the concentration of foxes and rabbits as a function of time for a period of up to 500 days. The predator-prey relationships are given by the following set of coupled ordinary differential equations: dx/dt = k-1 x - k_2 x .y
dy/dt = k_3 x. y y - k_4 y
Constant for growth of rabbits k_1 = 0.02 day6-1
Constant for death of rabbits k_2 = 0.00004/(day x no. of foxes)
Constant for growth of foxes after eating rabbits k_3 = 0.0004/(day x no. of rabbits)
Constant for death of foxes k_4 = 0.04 day^-1
What do your results look like for the case of k_3 = 0.00004/(day x no. of rabbits) and t_final = 800 days? Also plot the number of foxes versus the number of rabbits. Explain why the curves look the way they do

Answers: 2

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

Answers: 3

Answer

Engineering, 04.07.2019 18:20

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.

Answers: 3

Answer

Engineering, 04.07.2019 18:20

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor

Answers: 3

Answer

Engineering, 04.07.2019 19:10

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?

Answers: 3

Answer

You know the right answer?

There are initially 500 rabbits (x) and 200 foxes (y) on Farmer Oat's property. Use Polymath or MATL...

Questions