The sound you hear as the siren gets closer will increase in pitch and that will decrease as it moves away from you.
Explanation:
Sound is a longitudinal pressure wave. As the ambulance moves closer to you, the air molecules get compressed together. The wavelength of the sound (these pressure waves) decreases, and the frequency increases. That results in a higher sound pitch.
A 0.2 kg ball moves to the right with a speed of 3 m/s. It hits a 0.5 kg ball that at rest. After the collision, the second ball moves to the right with ...
Answer:
34 meters
Explanation:
20 meters +14 meters =34 meters
3 is B my dude and the reason nobody answered is because thousands of questions are asked every day. So not every question can be answered. It doesn't have to do with being lazy.
Answer:
4N downward
Explanation:
the 16N left and right cancel each other out, so you are left with the 4N downward.
