one year ago
How many Global Positioning System (GPS) satellites are required to pinpoint your location on Earth’s surface? (1 point)
24
12
3
5
i think it's 4, but 4 is not an option
Correct Answers
1 A
2C
3B
4c
100%
I literally am so confused please help
http://www.physics.org/article-questions.asp?id=55
So is it 24 ?????????
30 is not an option
Where did you get 24?
Read the part about trilateration.
From what I have been able to read, four are required unless the receiver clock is synchronized with the satellite clocks in which case only three are required. I think the key part of this question is "pinpoint.......on EARTH'S SURFACE". Knowing on earth's surface takes away the altitude aspect so three should do it I think. Remember I'm not a GPS expert.
Scroll down to Basic Concepts.
http://en.wikipedia.org/wiki/Global_Positioning_System