Usually, the decision about whether or not to use scientific notation is up to you. An answer of 1.2×103 is equivalent in EVERY WAY to 1200. Thus, you can answer either way. But be sure to check to see if the question states how the answer needs to be given. There is one condition under which scientific notation MUST...
You have to set the gravitational force equal to the centripetal force to understand the relationship between the two satellites. After all, the gravitational force IS the centripetal force: Fc = (msat)x(v)2/r Fg = Gx(mearth)x(msat)/r2 Gx(mearth)x(msat)/r2= (msat)x(v)2/r Gx(mearth)/r = v2 v = square root (Gx(meart...
The term _significant _DOES NOT mean "mathematically important." Certainly, the zero at the end of 350 is mathematically important. However, it is NOT significant. Remember, the term significant figure simply means that the figure was MEASURED. When you write a number as 350, you are telling scientists that the measuri...