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â 15y ago-- The orbital speed (period) of an earth satellite is essentially independent of its mass. Definitely for any artificial satellite, the mass doesn't matter, only the measurements of the orbit. -- If the 'radii' given in the question refer to the radii of the satellites themselves ... the physical cans ... then that doesn't matter either. The only thing that affects the speed in orbit is the size/shape of the orbit, not the size, shape, mass, age, or ethnicity of the satellite. -- So let's assume that these two satellites are both in circular earth orbits, and that the radii given in the question refer to the respective orbital radii ... one orbit has a radius of 7 units, and the other one has a radius of 9 units. According to one of Kepler's laws ... I think it's #3 ... the quantity ( T2 / R3 ) is a constant for all satellites of the same central body, where T = the period of the orbit, R = its radius. For the pair of satellites: TA2/RA3 = TB2/RB3 We're given that RA=7 and RB=9, so TA2/343 = TB2/729 TA2/TB2 = 343/729 ===> TA/TB = sqrt(343/729) ===> TA = TB x sqrt(343/729) This would give us the ratio of the orbital periods, but not the ratio of the speeds that the questions asks for. To get that, we also have to figure in the circumferences of the two orbits. CA = 2 pi RA = 14 pi units, CB = 2 pi RB = 18 pi units. The orbital speed of either one is (circumference / period). Speed of A = (CA/TA) = 14 pi / TA = 14 pi / [TB x sqrt(343/729)] Speed of #2 = (CB/TB) = 18 pi / TB Speed A / Speed B = (14 pi TB) / [18 pi TB x sqrt(343/729)] Speed A / Speed B = 7 / [9 sqrt(343/729)] = 7 / (9 x 0.68594) = 1.13389 (rounded) As expected (hoped), the speed of the satellite in the smaller orbit is greater than the speed of the one in the larger orbit. Kepler and Newton are both happy. I know we're not supposed to get personal with these contributions, but this questioner seems to have a number in mind and an understanding of the principles at work. It's been close to 40 years since I learned this stuff, and after sweating this one out, I would really like to know if my answer is anywhere close, so I'll ask the questioner to please do me a favor and put a comment on my message board. 10-Q
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â 15y agoThe 1980 eruption of Mount St. Helens did not produce lava flows. It was a plinian eruption that produced aolumn of ash and pyroclastic flows. Pyroclastic flows are avalanche-like masses of hot ash, rock, and gas that rase away from an erupting volcano at speeds that can reachinto the hundreds of miles per hour.
It speeds up.
I've had a similar problem on my 98 civic ex. There's two resistors wired to the fan control. One for speeds 1 and 2 and another for speeds 3 and 4. I suspect the one controling the 1 and 2 speeds has blown.
catalyst
speeds around 50kph
Satellites are placed into different orbits to serve various purposes like communication, weather monitoring, and scientific research. Each orbit has specific requirements, and therefore satellites need to move at different speeds and directions to fulfill their designated tasks. Collisions can occur due to the vast number of satellites in space and the complexities of orbital mechanics, making it impractical to have all satellites move at the same speed and direction.
Mercury moves the fastest among those planets, with an average orbital speed of about 47.87 km/s. Jupiter, Mars, and Saturn have slower average orbital speeds of about 13.07 km/s, 24.07 km/s, and 9.69 km/s, respectively.
For larger orbital radii, the orbital periods increase. This is because the gravitational force decreases with distance, leading to slower speeds and longer times to complete an orbit. Kepler's third law states that the square of the orbital period is proportional to the cube of the semi-major axis length.
As it increases, the orbital speed increases, and the period (time to complete an orbit) decreases, which is why Mercury has the shortest year, and Neptune the slowest orbital speed.
In a perfectly inelastic collision, the two objects stick together after the collision. The velocity of the objects after collision will be a weighted average of their initial velocities based on their masses. The velocity of ball a after collision can be calculated using the formula: (m1 * v1 + m2 * v2) / (m1 + m2), where v1 and v2 are the initial velocities of balls a and b, and m1 and m2 are the masses of balls a and b respectively.
Satellites have become smaller, more powerful, and more widely used for various purposes over the years. Advances in technology have allowed for increased data transmission speeds, improved imaging capabilities, and greater orbital maneuverability. Satellites now play a crucial role in communication, Earth observation, navigation, and scientific research.
No, planets do not revolve around the sun at the same speed. Their orbital speeds depend on their distance from the sun - planets closer to the sun have shorter orbital periods and faster speeds, while those further away have longer orbital periods and slower speeds.
if inclines are same angle, both will accelerate at same rate, assuming friction coefficients are the same
The orbital speeds of Jupiter's Galilean moons are significantly faster than Earth's moon. For example, Io, the innermost moon, has an average orbital speed of about 17.3 km/s, whereas Earth's moon has an average orbital speed of about 1 km/s. This difference is because Jupiter's stronger gravitational pull causes its moons to orbit at higher speeds.
The gravitational force varies directly as the mass and inversely as the square of the distance.
Satellites are man-made objects that orbit around the Earth at high speeds following specific paths. They are used for various purposes such as communication, weather monitoring, navigation, and scientific research.
Comet. Comets typically have faster orbital speeds than asteroids as they move along highly elliptical orbits that bring them close to the sun, increasing their speed. This is due to the gravitational pull of the sun that speeds up comets as they approach perihelion, their closest point to the sun.