A ship is cruising slowly through a channel with steep canyon walls on each side. The captain blows his foghorn and an echo from one wall is heard 4.2 s after the horn was sounded. The echo from the other wall is heard 6.5 s after the first echo. How wide is the channel? Assume the speed of sound in air is 343 m/s.

Formulating a hypothesis: part i since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of " because when writing your hypothesis