In which type of circuit does charge move in only one direction? a. an ac circuit b. a parallel circuit c. a combined circuit d. a dc circuit

What type of light does this light bulb produce most (i. e. at what wavelength does the spectrum have maximum intensity)?

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.