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<blockquote data-quote="Encarton" data-source="post: 1661083" data-attributes="member: 406619">I have a few problems that I don&#039;t quite understand and weren&#039;t explained well. So could I get some aid with these problems?--&gt; The gravitational force between two electrons 0.90 m apart is 6.69 multiplied by 10-71 N. Find the mass of an electron. (Use G = 6.67 multiplied by 10-11 N·m2/kg2.) --&gt; Uranus requires 84 years to circle the sun. Find Uranus&#039;s orbital radius as a multiple of Earth&#039;s orbital radius (rE). --&gt; The radius of Earth is about 6.38 multiplied by 103 km. A 7.29 multiplied by 103 N spacecraft travels away from Earth. What is the weight of the spacecraft at the following distances from Earth&#039;s surface? A.) 6.38 multiplied by 103 km B.) 1.28 multiplied by 104 km--&gt; Earth&#039;s gravitational field is 8.00 N/kg at the altitude of the space shuttle. What is the size of the force of attraction between a student with a mass of 40.0 kg and Earth?Much appreciated!I&#039;ll be mulling them over while (if) people respond.G= 6.67x10^-11Radius Earth = 6.38x10^6</blockquote>

[QUOTE="Encarton, post: 1661083, member: 406619"] I have a few problems that I don't quite understand and weren't explained well. So could I get some aid with these problems? --> The gravitational force between two electrons 0.90 m apart is 6.69 multiplied by 10-71 N. Find the mass of an electron. (Use G = 6.67 multiplied by 10-11 N·m2/kg2.) --> Uranus requires 84 years to circle the sun. Find Uranus's orbital radius as a multiple of Earth's orbital radius (rE). --> The radius of Earth is about 6.38 multiplied by 103 km. A 7.29 multiplied by 103 N spacecraft travels away from Earth. What is the weight of the spacecraft at the following distances from Earth's surface? A.) 6.38 multiplied by 103 km B.) 1.28 multiplied by 104 km --> Earth's gravitational field is 8.00 N/kg at the altitude of the space shuttle. What is the size of the force of attraction between a student with a mass of 40.0 kg and Earth? Much appreciated! I'll be mulling them over while (if) people respond. G= 6.67x10^-11 Radius Earth = 6.38x10^6 [/QUOTE]

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