PLS ANSWER NOW Coal is a fossil fuel that is used to produce electricity. Which of these statements best describes a benefit of coal mining on the region around the mines?

It gets abundant electricity.
It becomes rich in minerals.
Its groundwater is less contaminated.
The rate of evaporation decreases for local rivers.
ITS NOT C

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

Disney, viacom and aol time warner are examples of

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.