Gelombang dan Frekuensi

Given a wave equation Y = 0.02 sin (10πt − 2πx) with t in seconds, Y and x in meters. Determine: a. amplitude of the wave b. wave constant c. wave speed d. frequency of the wave e. period of the wave f. wavelength

A sound source is moving at a speed of 20 m/s towards a stationary person. The frequency of the sound source is 380 Hz. The speed of sound in air is 400 m/s. What is the frequency of the sound wave heard by the person?

In a vacuum, there is an electromagnetic wave with an electric field oscillation function I N/C. This wave is observed at a distance of 50 cm from an isotropic antenna. a. Determine the function for its pointing vector! b. Calculate the intensity of this observed wave! c. Calculate the power radiated by the isotropic source.

A thin layer of gasoline (n=1.50) floats on top of glass (n=1.60). Sunlight falls almost perpendicular to the thin layer and reflects to your eyes. Although sunlight is white light containing various colors, the thin layer appears yellow. This is due to destructive interference in the layer eliminating blue color from the light reflected to your eyes. Determine the minimum thickness of the thin layer.

Explain at least 3 recent studies on the applications of electromagnetic waves.