A uniform plank weight equals 120 N and of 3 m length . The support at Y provides a force of 50 N , while the support at X provides a force of 40 N. The support at 0.75 m far from X. Find the supporting force ( in N translational equilibrium

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

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.

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.