18. If Earth's mass is 6.0 x 1024 kg and the Moon's mass is 7.4 x 1022 kg, where is the centre of mass of the Earth-Moon system? The distance from Earth's centre to the Moon's centre is 3.8 x 105 km. Make a sketch showing approximately where the centre of mass of the Earth-Moon system would be located.
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- Neptune has a mass of 1.01026kg and is 4.5109km from the Sun with an orbital period of 165 years. Planetesimals in the outer primordial solar system 4.5 billion years ago coalesced into Neptune over hundreds of millions of years. If the primordial disk that evolved into our present day solar system had a radius of 1011km and if the matter that made up these planetesimals that later became Neptune was spread out evenly on the edges of it, what was the orbital period of the outer edges of the primordial disk?10- A softball of mass 250 gm is thrown with an initial velocity of 16 m sec'at an angle 0 to the horizontal. The total time od flight is 12 sec. What is the angle 0? 11- A skater moves around circle of radius 30 m. The central force of 450 N. After 40 sec, the skater finish 2 revolution. What is the mass of the skater?Selected astronomical data for Jupiter's moon Thebe is given in the table. Мoon Orbital Radius (km) Orbital Period (days) Thebe 2.20 x 105 0.67 From these data, calculate the mass of Jupiter (in kg). kg
- 16. Determine how far the center of mass of the Earth-moon system is from the center of Earth. Compare this distance to the radius of Earth, and comment on the result. Ignore the other objects in the solar system. (m. = 5.94×10²ªkg; mm = 7.36x10*kg; distance between earth and moon = 3.82x10°m; R. = 6.37×10ʻm).Selected astronomical data for Jupiter's moon Thebe is given in the table. Moon Orbital Radius (km) Orbital Period (days) Thebe 2.20 x 105 0.67 From these data, calculate the mass of Jupiter (in kg). kg7 بی A Z Part A 2 At what distance from the center of Earth is the center of mass of the Earth-Moon system? Suppose that the mass of the Moon is 7.35 × 1022 kg. Express your answer with the appropriate units. Icm = Submit Provide Feedback 55F Haze @ 2 S alt | A 3 Value WE x Request Answer 3 4 D Units لم R % F العال الالال 5 ? ا O Search G 6 B & H * N 8 ( ا ه M ن) ما تا
- Often in astronomy we compare objects. In this comparison, it is useful to know how the properties of the objects affect our observations. For the following hypotheti- cal changes in astronomical bodies answer whether the change would make the specified property L - Larger, S - Smaller, or N - Not changed. (If the first is L and the rest S, enter LSSSS).A) If the mass of the Sun were doubled and the Earth kept the same distance, the period of the Earth’s orbit would be .....B) If the distance between two planets is increased, the force of gravity between them is .....C) If the mass of an object dropped on the surface of Mercury were increased, the acceleration of the object would be ..... D) If the mass of Mars were greater (but its radius were the same), the acceleration due to gravity on its surface would be .....E) If the radius of the Earth were larger (but the mass were the same), the force of gravity on objects on its surface would be .....Q1\ Determine the ratio of the force exerted by the sun on the moon to that exerted by the earth on the moon for position A of the moon. Repeat for moon position B. where Me 5.976(1024) kg, Mm 7.347 x 1022 Kg. M, 1.99(1030) Kg. The distance between moon and the earth =384.398(10)m and distance between earth and the sun == 150(10) m. G-6.673(10¹)m³/kg.s² Sunlight AD BIn the Earth-moon system, we know both bodies actually orbit around thecenter of mass of the system. Approximately where is this center of masslocated?Mearth = 5.97 x 10^24 kg Mmoon = 1.62 x 10^23 kg r = 382,500 km A) Inside the earth B) Inside the moonC) Halfway between the earth and the moon. D) Cleveland
- 28. The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force FsM that the sun exerts on the moon is per- pendicular to the force FEM that the earth exerts on the moon. The masses are: mass of sun = 1.99 × 10º kg, mass of earth = 5.98 × 10²4 kg, mass of moon = 7.35 × 10² kg. The distances shown in the drawing are rSM = 1.50 x 10" m and reM = 3.85 × 10º m. Determine the magnitude of the net gravitational force on the moon. "SM Moon FSM Sun FEM 'EM EarthQuestion: 16 we have pour mases masses op ½ kg the coordina tes with equal distance. D am porm the origin. Calculate. M44SCS lies at kinetic at 1 tad/s when objecta spins. around z anis. enereA body weight 4.5 kgwt on the surface of the earth. How much will weight on the surface of the planet whoe mass is (1/9)th mass of the earth and radius half that of the earth.