Scientists have tracked the changes in this land for many years. Picture A shows how the land looked to start with. Many years later, the land looked like picture B. What most likely caused the change in the land?

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

Which lists the organs in the correct order as food passes from the mouth to anus?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?