Which has more pressure?

Which type of basaltic lava flow has a fairly smooth

What happens when a rubber rod is rubbed with a piece of fur?

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.