Four horizontal, homogeneous, isotropic geologic formations each 5m thick over lie one another. If the hydraulic conductivities are 10-4,10-6,10-4 and 10-6 respectively. Calculate the horizontal and vertical components of hydraulic conductivity

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.