Two parallel metal plates 2.0 cm apart have a potential difference between them of 75 V. The electric force on a positive charge of 3.2 x 10^-19 C at a point midway between the plates is approximately. a. 1.2 x 10^-15
b. 9.6 x 10^-17
c. 1.6 x 10^-18
d. 4.8 x 10^-18

-4 on

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west