Ga coil has 2.85-ω resistance and 109-mh inductance. if the current is 3.10 a and is increasing at a rate of 3.60 a/s , what is the potential difference across the coil at this moment

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

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

Is a volume of space that is empty of matter.