A student made a hypothesis that a wooden block with different friction matences on the
base warud need different weights to
make it move across a table. The friction
matencus are sandpaper, cardboard glass,
acumivicum and wood. Plán an investigation
to rest the students hypothesis.

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.