The x vector component of a displacement vector r has a magnitude of 129 m and points along the negative x axis. The y vector component has a magnitude of 118 m and points along the negative y axis. Find (a) the magnitude and (b) direction of vector r. Specify the direction as a positive angle with respect to the negative x axis.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

the force on the thing and the distance the force moves the thing

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.