What would happen to the size of the image if the green pencil were moved farther away from the mirror

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

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants