An object if moving according to this trajectory r=(-1+2t+t2, 3.t). Draw the trajectory in the plane. What is the velocity of the object? What equation is describing the movement of the object? Is the object accelerating? How do you know?

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive

Area around a charged object where the objects can exert a force on another charged objects is an electric

Atoms containing radioactive nuclei are called