moore7906 moore7906
  • 23-06-2018
  • Geography
contestada

Pluto's mass was poorly known before 1978. what happened in that year to change this

Respuesta :

Diatonic254
Diatonic254 Diatonic254
  • 03-07-2018
The answer is ‘The return echo of a radar pulse, sent many years before, returned to Earth allowing a Doppler shift measurement of its rotation rate’.  This allowed the astronomers to  calculate its centripetal force hence able to derive force by using the law of universal gravitation.




Answer Link

Otras preguntas

Q: USE THE FOLLOWING INSTRUCTION WORDS TO MAKE A CONPLETE INSTRUCTION. 1)CHOP 2)BOIL 3)SPRINKLE
please tell me the answer
what is a website that will publish your website when you paste the link in it 200 points
How do I know if someone likes me
I have no clue how to do this! Find mAC
(−9,−8) and (-15, -16) ? Write your answer in simplest form.
Please help me with my math
Explain why tectonic activitys happen along the plate boundaries rather than in the middle of a plate
What is 9.254 rounded to the nearest hundred.
According to the U.S. Department of Labor, the average American has had lxw many jobs before the age of 32?