Physics

Problem

+5.0\,\mu\text{C}

particle of mass

4.0\times10^{-4}\,\text{kg}

is released from rest at point A, where the electric potential is

600\,\text{V}

. The particle moves successively to point B at

200\,\text{V}

and then to point C at

-100\,\text{V}

. Let

v_B

and

v_C

be its speeds at B and C, respectively. What is the ratio

\dfrac{v_C}{v_B}

? a)

1.75

1.30

0.87

1.50