Physics, 11.11.2020 07:10 chriscook6958
An unconfined aquifer is comprised of two main layers: a well-sorted sand from 0 – 50 ft below the ground surface and a well-sorted gravel from 50 – 78 ft below the ground surface. The aquifer is underlain by a clay aquitard. Recently, the Maryland Dept. of Environment discovered that in 1990 illegal, toxic chemicals was put into a disposal well that is 5900 ft upgradient of the water supply wells for a town. Some of the water supply wells are slotted in the sand and some in the gravel layer. Assuming that the toxic chemical travel at the same rate as the groundwater and that water does not move between the sand and gravel layers, calculate the time (in years) that it might take water to flow from the disposal well to the water supply wells. The town will determine if they should start testing the wells for the toxic chemicals based on your calculations.
Disposal well Water supply wells
Ground surface elevation (ft) 148 142
Water table depth below ground surface (ft) 31 34
Answers: 2
Physics, 21.06.2019 17:20
You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u.s. legal proceeding.)
Answers: 3
Physics, 22.06.2019 10:30
In science and physics what is the standard unit of measure for speed?
Answers: 1
Physics, 22.06.2019 14:30
A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.
Answers: 1
An unconfined aquifer is comprised of two main layers: a well-sorted sand from 0 – 50 ft below the g...
Mathematics, 30.07.2019 00:30
English, 30.07.2019 00:30
Computers and Technology, 30.07.2019 00:30
English, 30.07.2019 00:30
Arts, 30.07.2019 00:30
Advanced Placement (AP), 30.07.2019 00:30