Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
What is the primary force responsible for maintaining the orbit of a satellite around a larger mass?
electromagnetic force
strong nuclear force
gravitational force
weak nuclear force
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Which of the following is an example of a satellite?
earth orbiting the Sun
planets orbiting the Sun
all of the above
moon orbiting Earth
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What shape are the orbits of planets around the Sun often closest to?
parabolic
hyperbolic
elliptical
circular
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Which of the following factors determine the orbital speed of a satellite?
mass of the central object
distance between the two objects
all of the above
gravitational constant
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The orbital period is defined as:
the time it takes for an object to complete two full orbits
the time it takes for an object to complete half an orbit
the time it takes for an object to escape the orbit
the time it takes for an object to complete one full orbit
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Geostationary satellites are designed to orbit Earth:
in a random pattern
directly above the equator
directly above the poles
in a figure-eight pattern
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Explain how the gravitational force between two objects provides the necessary centripetal force for circular motion.
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Describe the characteristics of geostationary satellites and their applications.
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A geostationary satellite orbits the Earth with a period of 24 hours. Calculate the orbital radius of this satellite. Given: The mass of the Earth is 5.97×1024 kg, and the gravitational constant (G) is 6.67×10−11Nm2kg−2.
42,227 km
30,000 km
35,786 km
25,000 km
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Calculate the velocity of a satellite orbiting Mars at a distance of 9,400 km from the planet's centre. The mass of Mars is 6.42×1023 kg.
2.4 km s−1
5.3 km s−1
2.1 km s−1
3.0 km s−1
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What is the orbital period of a satellite orbiting the Earth at an altitude of 300 km? The Earth's radius is 6,371 km, and its mass is 5.97×1024 kg.
5,000 s
5,800 s
5,400 s
4,800 s
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What is the velocity of a satellite orbiting the Earth at a height of 360 km above the surface? The Earth's mass is 5.97×1024 kg, and its radius is 6,371 km.
8.5 km s−1
7.0 km s−1
9.1 km s−1
7.7 km s−1
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