What is (1) active region (2) cut-off region (3) saturated region in a transistor??

Which notation is used to represent an alpha particle? a. b. c. d.

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?