Consider a flow problem such as the Darcy experiment with a 1-m column. Calculate the solutions given in Equations 3 and 4 for a series of time values and plot the results (head as a function of x and time). Assume K/Ss = 0.2 m2/day, hu = 1 m, hr = 0, and hinit = 0. Use these results to propose and justify a criterion for when the two solutions can be used interchangeably. (PA.4 - 6 points) Equation 3 + 2 h(x, t) sim (47) (-exp ( Knattat S512 TT n=1 Equation 4 h(x,t) hinit = (ht - hinit) erfc 4(K/S)t Consider a flow problem such as the Darcy experiment with a 1-m column. Calculate the solutions given in Equations 3 and 4 for a series of time values and plot the results (head as a function of x and time). Assume K/Ss = 0.2 m2/day, hu = 1 m, hr = 0, and hinit = 0. Use these results to propose and justify a criterion for when the two solutions can be used interchangeably. (PA.4 - 6 points) Equation 3 + 2 h(x, t) sim (47) (-exp ( Knattat S512 TT n=1 Equation 4 h(x,t) hinit = (ht - hinit) erfc 4(K/S)t