Find the wavelength of a wave traveling at 3.26 e6 m/s with a period of 0.0125 s.

The frequency of a wave is the reciprocal of its period, so for the wave in this problem, its frequency is


The basic relationship between wavelength, frequency and speed of a wave is given by:

where
is the wavelength of the wave
v is its speed
f is its frequency

If we plug the numbers given by the problem into this equation, we can find the wavelength of this wave:

Amethod of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

This is the answer: body 1 + engine 2