What is the difference between biopsychology and neuropsychology?

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".