Physics, 01.11.2019 04:31 3mory2006p78jan
To find some of the parameters characterizing an object moving in a circular orbit. the motivation for isaac newton to discover his laws of motion was to explain the properties of planetary orbits that were observed by tycho brahe and analyzed by johannes kepler. a good starting point for understanding this (as well as the speed of the space shuttle and the height of geostationary satellites) is the simplest orbit: a circular one. this problem concerns the properties of circular orbits for a satellite orbiting a planet of mass m. for all parts of this problem, where appropriate, use g for the universal gravitational constant. the potential energy u of an object of mass m that is separated by a distance r from an object of mass m is given byu=−gmmr. what is the kinetic energy k of the satellite? find an expression for the square of the orbital period. express your answer in terms of g, m, r, and π.
Answers: 3
Physics, 22.06.2019 17:30, HernanJe6
Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.
Answers: 1
Physics, 22.06.2019 17:30, Coolcatfurzy
Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity
Answers: 3
Physics, 23.06.2019 02:30, xrivas
Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.
Answers: 1
To find some of the parameters characterizing an object moving in a circular orbit. the motivation f...
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