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Look up Keplers second law.

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Q: Is the area swept out per unit time by Earth moving around the sun equal to the area swept out per unit time by Mars moving around the sun?
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Continue Learning about Astronomy

What is the definition of a dustbin?

The definition of a dustbin is a bin that will hold trash when swept up in to. First an individual gathers all the dirt into a pile, then they sweep it into one of these bins, and then they throw the dirt in the trash.


Why would you weigh more on Jupiter?

The gravitaional forces on Jupiter are greater than here on Earth, so the force on your body is greater. This increases your weight. Your mass remains the same though. Force(or weight) = mass * acceleration. Acceleration is gravitational constant. On earth it is 9.81 m/s2. On Jupiter it is 24.79 m/s, or about 2.5 times that of earth..


How does a planetary orbit subtend an arc?

Let's ramble around a bit and see if we can get to a place where the answer appears. Ready? Let's jump. Planets rotate about the sun in their orbits. Some of the orbits are pretty circular, and others are eliptical. You can picture these different orbits with the sun in the center and the planet moving around the sun in its circular or eliptical orbit. Got a picture? Good. Let's jump again. If we take a planet with a circular orbit and draw a line from the sun to where it is, that's a radius. If we look at the planet some time later and draw another line from the sun to the planet, we have another radius. The path the planet has traveled during the time we waited before drawing that second line is an arc. It's a portion of the planet's orbital path. In this case, that path is a circle (though no planet has a perfectly circular orbit). If we pick the right amount of time, the planet will have moved through 1/360th of its orbit around the sun. That's one degree of of its orbit or one degree of arc. The (amount of) arc subtends a one degree angle as regards the planet's orbit. That which subtends an angle is a line or path (in this case, it's an arc), that lies inside two lines drawn out from a central point that form that given angle. We spoke of the arc subtended by the angle, and we can apply this idea to an eliptical path of orbit as well as a circular one. It's a bit "weird" because the eliptical orbit makes for some odd "bits" of arc at different points along the curve of its circumference, but no biggie. We can visualize it. Oh, and we can talk about the area between the two lines that form that angle and the arc that subtends the angle. It is the area of an orbit subtended by the angle we created (regardless of its size). And check this out! Any planet moving in any kind of stable orbit (regardless of eccentricity) sweeps out equal subtended areas for the same amount of time through anypart of its orbit. Let's have a look at this just a bit more closely. In a circular orbit, the area swept out in a given subtended angle will be the same because the identical "slices of the pie" (refering to the circular shape of the orbit) will have the same area for the same angle. Also, in a circular orbit, a planet has a fairly constant speed along its path of travel. It will sweep out equal areas from anywhere in its orbit in the same amount of time. But in an eliptical orbit, the planet is moving more slowly when it is farther away from the sun. As it is farther away, the lines we draw to set up an angle (and a subtended arc) are longer. Yes, the lines are longer, but the planet is moving more slowly, and it will still sweep out an identical areain the same amount of time as it would closer it. For comets, the orbits are even more eccentric. But the same idea applies. Simple and easy. How about a nice drawing to illustrate the point? Wikipedia has a good article on Kepler's laws of planetary motion, and the drawing is found there. You'll need a link, and one is posted below. Surf on over and check it out.


Why are comets visible?

When a comet passes near the sun the sunlight vaporizes ice on the surface, forming a cloud of gas ad dust that is swept away from the sun by the solar wind. The gas and dust reflect a lot of sunlight, making the comet visible for millions of miles.


Compare the sizes of the largest moons in the solar system and the smallest planet in the solar system?

The largest moon in the Solar System is Jupiter's moon Ganymede, which is around half the size of the planet Earth and a little smaller than Mars at around 5268km in diameter. The second largest moon is Saturn's moon Titan, which is a little smaller than Ganymede at 5152km in diameter - Titan was once thought to be the largest moon, but as it has a thick atmosphere it was hard to determine how big the actual moon was under the clouds until the space age. Other large moons include, going down in scale from largest to smallest - Jupiter's Callisto, Jupiter's Io, Earth's moon, Jupiter's Europa and Neptune's Triton. Their diameters can be found in any good astronomy book. Triton is around a fifth of Earth's diameter. The smallest true planet in the Solar System is Mercury, which is about a third the size of the Earth at 4878km in diameter. However, Mercury is larger than most moons - only Titan and Ganymede are larger! (Mercury is very dense, however, so it's more massive than Titan.) The second smallest planet is Mars, around half the size of Earth. Pluto, the traditional "ninth planet," is now considered a "dwarf planet" - a small icy round object orbiting beyond Neptune in a zone of other, similar icy comets and asteroids known as the Kuiper Belt. (Dwarf planets, by the way, are objects massive enough to pull themselves into a rounded shape, but not massive enough to have swept their orbit clean of debris. The eight real planets all dominate their orbit, but Pluto blends in nicely with the other Kuiper Belt objects and so doesn't clear its orbit.) Pluto was far smaller than the other planets, and is smaller than Neptune's moon Triton at only 2300km in diameter. It's thought that Triton was also a dwarf planet from the Kuiper Belt that was captured into orbit around Neptune. The largest dwarf planet is Eris, also in the Kuiper Belt. It is a little bigger than Pluto at around 2600km in diameter, and is about the size of Triton. It was the discovery of Eris - an obvious ice dwarf in the Kuiper Belt that was bigger than planet Pluto - that led astronomers to question Pluto's status as the ninth planet, to define what a planet is anyway, and to introduce the new category of dwarf planet. The smallest dwarf planet is the asteroid Ceres, at around 1000km in diameter. It is about the size of France. As well as the eight main planets and the five known dwarf planets, a huge amount of assorted debris orbits the Sun as well. Nobody knows what the smallest asteroid or comet is, because it's too small! Tiny particles of meteoritic dust rain down from space all the time and land in your hair, skin and clothes every time you go outside - so you've been hit by a meteorite! Perhaps in your hair right now is the smallest piece of debris in the Solar System. Check the related link - it's a diagram of the smallest planets and largest moons (excluding dwarf planet Eris as this wasn't discovered at the time. Ceres is about half the size of Pluto.)

Related questions

Is swept an onomatopoeia?

No, "swept" is not an onomatopoeia. Onomatopoeia is a word that imitates the sound it represents, like "buzz" or "clang." "Swept" is a verb that describes the action of cleaning by moving a broom or brush over a surface.


What is swpt volume?

The term is swept volume, rather than swpt volume. definition of swept volume is the volume of all of the cylinders while moving by the pistons from one dead center to another.


What material is carried by slow moving water?

Small particles of dirt, sand, or silt, which can be dissolved or swept along in the water.


How do salmons sleep?

Salmon don't sleep. If they slept, they would die. They would get swept back down river, and they would also not get air through their gills. They save energy by moving through slow- moving water.


How many syllables are in swept?

Swept is monosyllabic.


What is the simple past of sweep?

the simple past of sweep is swept


Why do gases surround the Earth?

Gravity is able to keep the heavier gases close to the Earth's surface, but light gases such as helium rise in the atmosphere and are swept away by the Solar Wind.


What would happen if the attractive forces between all of the particles of matter on earth were equal?

The entire human race would be swept away and the Lumpy Space Princess would take over the universe. The earth would turn purple and lumpy and all of the animals would be turned into slaves. Our natural sources would cease to exist and the only food will be onions.


When was Sea Swept created?

Sea Swept was created in 1998.


What is the present tense of swept?

Sweep is the present tense of swept.


What maintains the speed of earth as it orbits around the sun?

As we know that Kepler's laws of planetary motion state that aerial velocity of a planet remains constant i.e dA/dt = constant , Where A is the area swept by the planet around sun. so to maintain the aerial velocity constant,planet has variable velocity.


What is the past tense of swept- ed?

Swept is the past tense of sweep.