What causes an electric current in a wire? . a)electric fields cause atoms to move in the wire.. b)electrons flow because of electrical attraction and repulsion.. c)electrons move because of heat.. d)electrons build up in the wire and create a charge.

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

Positrons are spontaneously emitted from the nuclei of

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque