Suppose that you own a local chain of 10 grocery stores that sell oranges. (Assume that the grocery stores are all the same in terms of customer composition, products sold, etc.) You are interested in determining whether or not you are maximizing revenue on the oranges you sell. Devise a plan to calculate the arc elasticity of demand for the oranges. What data would you need? How could you get that data? How do you use the raw data to tell you if you’re maximizing reve

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

i think it would be 5