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Hi Mrs. Sweetie! I'm a final year students and I'm so confused about choosing the university. There are a lot of option for me with different range of entrance requirement points. At this time I do not know what I like and which school is suitable for me. I really need your help. Please provide me some advice as soon as possible. Thank you a lot!
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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.
Answer:
the the answer answer is is d
Answer:
C. The people felt relief at the end of their journey.
Explanation:
In this context, the sentence in quotation marks means that the people who had just endured a long and dangerous trip across the ocean felt relieved that their travels were over and that they were able to stand on solid ground once again. The sentence is, indeed, a simile, in which something, stepping foot on solid ground, is likened to something else, in this case, breathing fresh air.