Physics Homework Help?!?

Posted on 2015-09-28 06:50:00 in Physics by KEVIN

1. A proton is located at <3 x 10^-10, -3 x 10^-10, 8 x 10^-10>m.

(A) what is r, the vector from the origin to the location of the proton?

(B) what is the magnitude of r?

(C) what is the unit vector of r?

2. A star is located at <6 x 10^10, 8 x 10^10, 6 x 10^10>m. A planet is located at <-4 x 10^10, -9 x 10^10, 6 x 10^10>m.

(A) what is the vector pointing from the star to the planet?

(B) what is the vector pointing from the planet to the star?

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