Static discharge differs from electric current because static discharge is described by which of the following?
a involves the movement of ions as well as electrons
b results because a force is exerted on electrons
c lasts for only a fraction of a second
is the flow of electrons

The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

Select all the correct answers. which three statements about electromagnetic radiation are true?