Which of the following is not a reason fluorescent lamps are advantageous over incandescent lamps? a. fluorescent lamps operate at a higher temperature than incandescent lamps. b. fluorescent lamps are more efficient than incandescent lamps. c. fluorescent lamps produce light with less glare than incandescent lamps. d. fluorescent lamps dissipate more energy as light instead of heat than incandescent lamps. ( penn foster exam )

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

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

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity