A tuning fork of frequency 400 Hz is moved away from an observer and toward a flat wall with a speed of 2.0 m/s. What is the apparent frequency of the unreflected sound
waves coming directly to the observer?

The earths atmosphere is made up of nitrogen and oxygensolids turning into gases is called sublimation.

To a fellow spongebob-ian i will be glad to , the cheetah didn't get far on purpose because he's a cheetah  ( ͡° ͜ʖ ͡°)

Answerthe global climate during the paleogene departed from the hot and humid conditions of the late mesozoic era and began a cooling and drying trend which dispite having been periodically disrupted by warm periods such as the paleocene-eocene thermal maximum, persists today;