An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 44 mm and 88 mm. the electric potential of the inner conductor with respect to the outer conductor is - 400 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to

truck y has a greater velocity than truck x.

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

3. dark matter

empty space could also be a simple vacuum