1. In geohydrology the unit m/d is often used to measure the hydraulic conductivity k. What is the relation with the SI-unit m/s?
2. A certain soil has a hydraulic conductivity k = 5 m/d. This value has been measured in summer. In winter the temperature is much lower, and if it is supposed that the viscosity µ then is a factor 1.5 as large as in summer, determine the value of the hydraulic conductivity in winter.