The flow of groundwater is dependent on
A) topography of the ground surface.
B) gravity only.
C) pressure only.
D) hydraulic conductivity and pressure.
Answer: D
You might also like to view...
A coal-fired plant generates 600 MW of electric power. The plant uses 4.8 × 106 kg of coal each day. The heat produced by the combustion of coal is 3.3 × 107 J/kg
The steam that drives the turbines is at a temperature of 300°C, and the exhaust water is at 37°C. (a) What is the overall efficiency of the plant for generating electric power? (b) What is the maximum efficiency that this plant could possibly have using the same temperature extremes that it presently uses? (c) How much thermal energy is exhausted each day by this plant?
A 5-turn square loop (10 cm along a side, resistance = 4.0 ?) is placed in a magnetic field that makes an angle of 30° with the plane of the loop. The magnitude of this field varies with time according to B = 0.50t2, where t is measured in s and B in T. What is the induced current in the coil at t = 4.0 s?
a. 25 mA b. 5.0 mA c. 13 mA d. 43 mA e. 50 mA
Solar winds headed in Earth's direction are deviated mainly by
A) the upper atmosphere. B) the troposphere. C) Earth's magnetic field. D) Earth's radiation belts.
What is the meaning of the term "critical mass"?
A) This refers to the mass of the "critical" elements in a reactor, i.e., the uranium or plutonium. B) This refers to the minimum amount of fissionable material required to sustain a chain reaction. C) This refers to the maximum amount of fissionable material required to sustain a chain reaction. D) This is the amount of mass needed to make a power reactor economically feasible. E) This is the material which is just on the verge of becoming radioactive.