What is the time taken by a planet to sweep an area of 2 million square km if the time taken by the same planet to cover an area of 1 million square km is 36 hours? a) 18 hours b) 36 hours c) 72 hours d) 144 hours
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What is the time taken by a planet to sweep an area of 2 million square km if the time taken by the same planet to cover an area of 1 million square km is 36 hours?
a) 18 hours
b) 36 hours
c) 72 hours
d) 144 hours
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- I have submitted this question 4 times and the responses have all been wrong. Please put your best person on this. I have tried 19.9923, 20.6, and 20.69 for part 1 and those are all wrong and I have tried 14.1122, 14.80, 8.41781, and 14.87 for part 2 and those are all wrong too. Please help! I'm wasting questions!20 Approximately how many other planetary systems have been discovered to date? A Tens of thousands B) Tens C Hundreds D Thousands E Millions1. The diameter of the Sun is equal to 1.392*10^9 m, and the distance from the Sun to Saturnis equal to 9.5 AU. Suppose you want to build an exact scale model of the solar system,and you are using a volleyball with average diameter of 21 cm to represent the Sun. a) In your scale model, how far away would Saturn be from the Sun? Give your answer inmeters.b) The actual diameter of Saturn is 116,460 km. What would be Saturn’s diameter in yourscale model? Give your answer in centimeters.
- What is the surface gravity (local acceleration) of a planet with a mass of (3.5×1024kg) that has a radius of (2.2×106m)?Why is pluto not considered a major planet? Explain.How many orders of magnitude do you need to grow in spatial scale (size) to form a planet? Let's take the extreme ends of this scale, from a dust particle of radius a = 10-6m to the gas giant Jupiter (you can round up its radius to the nearest ten to keep it simple). What else has this difference in order of magnitude? Maybe pick something that's not a length scale. Be creative!
- 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.Calculate the density for the following planets: Planet A) Mass = 8.2 , Radius =2.74 km Planet B) Mass = 6.99 , Radius =1.648 km Planet C) Mass = 446 , Radius =19.46 km Planet D) Mass = 2225 , Radius =11.21 km Mass (Earth=1) Masses are given in terms of Earth mass.Planet X is four times as massive as its moon Y and their centers are separated by 100,000 km. Relative to the center of planet X, about what point (the center of mass) does the planet-moon system orbit? A) d= 12,000 km from planet X’s center B) d= 16,000 km from planet X’s center C) d= 20,000 km from planet X’s center D) d= 24,000 km from planet X’s center E) d= 48,000 km from planet X’s center