Why are hot gas clouds more dangerous than lava flow from a volcanic eruption?
a. Hot gas clouds travel at a much faster speed than lava.
b. Hot gas clouds are hotter than lava.
c. Hot gas clouds are more dense than lava.
d. Hot gas clouds absorb all of the oxygen in the air.

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90