A proton is located at <3 x 10^-10> m. What is r, the vector from the origin to the location of the proton

Complete Question

A proton is located at <3 x 10^{-10}, -5*10^{-10}  , -5*10^{-10}> m. What is r, the vector from the origin to the location of the proton

The  vector position is  

Explanation:

From the question we are told that

  The  position of the proton is

Generally the vector location of the proton is mathematically represented as

So substituting values

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles