Compare Gravitational and Electric Forces Practice Test

Two objects are $r = 0.30,\text{m}$ apart. Object 1: $m_1 = 5.0,\text{kg}$, $q_1 = +1.0,\mu\text{C}$. Object 2: $m_2 = 10.0,\text{kg}$, $q_2 = +1.0,\mu\text{C}$. Using $G = 6.67 \times 10^{-11}$ and $k = 9.0 \times 10^{9}$, which statement is correct about the forces (magnitudes and whether attractive/repulsive)?

Two objects are separated by the same distance $r$. Object 1 has mass $m_1$ and charge $q_1$, and object 2 has mass $m_2$ and charge $q_2$. Which expression correctly gives the ratio of the magnitude of the electric force to the magnitude of the gravitational force between them?

Use $F_{\text{grav}} = G\dfrac{m_1m_2}{r^2}$ and $F_{\text{elec}} = k\dfrac{|q_1q_2|}{r^2}$.