Earthquake engineering
two harmonic displacement waves
both with unit amplitude
first wave has wavelength = 10 m and period = 1 s
second wave has wavelength = 11 m and period = 1.1 s
plot the variation with distance for the first 300 m induced by the superposition of the two waves 2 s after the initiation of the motion
determine the wavelength of the apparent wave from this plot.

Un jugador de beisbol batea un foul recto en el aire. la pelota deja el bate con una rapidez de 120 km/h. en ausencia de resistencia del aire. ? cual sera la rapidez de la pelota cuando la atrape el catcher

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate