The first overtone standing wave is formed in a 30 cm closed pipe. Calculate its frequency. Given the speed of sound is 340 m s^-1.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above