What evidence would need to be provided to refute the theory of gravity? Write 1-2 sentences.
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Q: Can I get help please
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- why is the force of earths gravity so strongCalculate the speed of the ISS. Assume it takes 92 minutes to orbit once and that the altitude above the Earth's surface is 410 km. Assume the Earth's radius is 6.37 x10^3 km. Use your knowledge of centripetal motion to calculate the speed of the ISS.How acceleration due to gravity varies with different conditions.
- Question 1 (Total: 30 points) a. What is a repeat ground-track orbit? b. Explain why repeat ground-track and Sun-synchronous orbits are typically used for Earth observation missions. c. The constraint for a Sun-synchronous and repeat ground-track orbit is given by T = 286, 400, where I is the orbital period in seconds, m the number of days and k the number of revolutions. Explain why this is, in fact, a constraint on the semi-major axis of the orbit.Kepler's 1st law says that our Solar System's planets orbit in ellipses around the Sun where the closest distance to the Sun is called perihelion. Suppose I tell you that there is a planet with a perihelion distance of 2 AU and a semi-major axis of 1.5 AU. Does this make physical sense? Explain why or why not.Two large asteroids start with an initial separation of r0, at which time they each exert a gravitational force on the other of strength F0. After they have fallen toward each other for a period of time, their separation has decreased to 0.38r0. At that moment, what is the strength of the new gravitational force that each asteroid feels, in terms of F0? Blank 1. Calculate the answer by read surrounding text. times F0. Express your final answer to at least 3 significant figures.
- How do we calculate gravity at higher elevations on earth?Who gathered the data that were used to show that the planets travel in elliptical paths around the Sun? Who discovered elliptical orbits? Who explained them?Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m(6380 kmkm). Use the inverse-square law to find a height above Earth's surface at that the force of gravity on a shuttle is about 96 %% that at Earth's surface.