<span>This is foreshadowing that Fortunado will not leave the vaults (C). He has become nervous about Montressor's actions and has suggested that they leave, hoping that this is all a joke. But Montressor uses verbal irony to indicate that only he will be leaving, and Fortunado will remain entombed for the insults he supposedly dealt Montressor previous to the beginning of the narrative.
The second question, though it doesn't have all the multiple choice options available, suggests that Montressor is trying to flatter Fortunado to pique his interests in going down to the catacombs, even during this festival. He is playing to Fortunado's ego as a wine connoisseur.</span>
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From Keplers discovery, scientists were also able to infer that the closer a satellite is to an object, the stronger the force of attraction, hence it must travel faster in order to maintain orbit. Relying on this formula, we are able to see that the velocity required for orbit is equal to the square root of the distance from the object to the center of the Earth times the acceleration due to gravity at that distance. So if we wanted to put a satellite in a circular orbit at 500 km above the surface (what scientists would call a Low Earth Orbit LEO), it would need a speed of ((6.67 x 10-11 * 6.0 x 1024)/(6900000))1/2 or 7615.77 m/s. So really, a satellites ability to maintain its orbit comes down to a balance between two factors: its velocity (or the speed at which it would travel in a straight line), and the gravitational pull between the satellite and the planet it orbits. If youd like more info on satellites, check out these articles: Orbital Objects List of satellites in geostationary orbit Weve also recorded an episode of Astronomy Cast about the space shuttle.
Both characters learn to be careful what they wish for.