The outer surface of the cardboard center of a paper towel roll: a. cannot be a Gaussian surface since it is an insulator. b. is a possible Gaussian surface. c. cannot be a Gaussian surface because it is not a closed surface. d. none of the other responses. e. cannot be a Gaussian surface because it encloses no charge.

What are the three ways that an object can accelerate

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?