A shirt appears blue when blue light shines on it. And the same shirt appears black when green light shines on it. What color will this shirt appear when cyan light shines on it?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Abar magnet cut in half will form a total ofpoles. a)fourb)eightc)two

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