Why does ambulance sounds low pitched when it passes by Question 4 options:

A. Wavelength decreases so amplitude decreases

B. Wavelength expands so frequency gets lower

C. Wavelength contracts so frequency decreases

D. Wavelength decreases do amplitude increases

What is created when solids, liquids, an gases mix with one another

The mantle is made up of which structural zones?

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?