Physics
posted by JV .
A planet with mass 7 x 1024 kg orbits a sun with a period of 1 Earth's years. The speed of the planet around that sun is constant and v=43000 m/s.
What is the mass of that sun?

Physics 
tchrwill
The period of an orbiting body derives from
....T = 2(Pi)sqrt(r^3/µ) in seconds where T = the period in sec, Pi = 3.1416, r = the orbital radius about the Sun in meters and µ = the planet's gravitational constant = Gm where G = the gravitational constant of the Sun and m = the mass of the planet.
Respond to this Question
Similar Questions

Math
The period of revolution of a planet around the sun is the time it takes for the planet to complete one orbit of the sun. The period, P years, is give by Kepler's third law P^2=D^3, where D is the average distance from the sun in astronomical … 
physics help 3!! **
Based on the following data about planet X (which orbits around the Sun): Planet X's distance from Sun = 3.6*1012 m Planet X's radius = 2*106 m Planet X's mass = 8.2*1022 kg a.) Find gx, the size of the acceleration due to gravity … 
physics
The mean distance of the planet Neptune from the Sun is 30.05 times the mean distance of Earth from the Sun. a.) Determine how many Earthyears it takes Neptune to orbit the Sun. b.) The mass of the Sun is 1.99 x 10^30 kg, and the … 
Physics
1. Planet X orbits the sun with a mean orbital radius that is 6200 times that of earth. Its diameter is twice that of earth, and its mass is 8 times that of earth. A) Calculate the year of the planet X. B) Calculate the acceleration … 
Astronomy
Orbital speed is the speed with which a planet moves around the sun. The speed is determined by: a)the mass of the planet only b) the mass of the sun only c)both the mass of the planet and the mass of the sun d)the mass of the planet … 
Physics
The planet pluto travels once around the sun every 248 years at a mena distance from the sun of 5890x10^6 km. Find its orbital speed around the sun in (m/s). 
earth
planet is in circular orbit around the Sun. Its distance from the Sun is 2.9 times the average distance of Earth from the Sun. What is the period of this planet, in Earth years? 
science
if all of the following imaginary planets were the same distance from the sun, which would experience the strongest force of gravity due to the sun? 
Physics
Many astronomers argue that the Earth and Moon should be considered a double planet,since the gravitational force by the sun on the Moon is approximately as big as that by the Earth on the moon.Using the data below for the Earth and … 
Physics?
What information do you need to calculate the altitude of a satellite’s planetsynchronous orbit?