In the first passage, lexicographers are described as diligent and accomplished; they have a number of difficult and complex tasks to do. In the second passage, however, the word lexicographer seems to have a negative connotation, and a dictionary writer is compared unfavorably with a poet. This shift is likely because Johnson had to adjust his plan as he wrote his dictionary and thought that he had not met his lofty goals.
Answer:
you inch to the left ◀️ you have to do is a little Lewis
Answer:
b seaweed could be a great source of fuel
Explanation:
0%Confidence Score
80%Confidence Score
68%Confidence Score
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.
