The Doppler effect is the change in sound or light that occurs whenever there is motion between the source and its observer. The siren of the fire engine has a lower pitch as it moves away because the waves are now spread out causing a lower frequency and a lower pitch. High-frequency sound waves have a higher pitch and higher energy than low-frequency waves.
The answer is C but man if you have leak or a meltdown good luck to anyone downstream.
Answer:
the final speed of the stool is 3.6 rad/s
Explanation:
As we know that there is no external torque on the system
So we can use concept of angular momentum conservation
So we will have
now we will have
So the final speed of the stool is 3.6 rad/s
Answer:
Radient to ElEcTrIcAAl
Explanation:
The FitnessGram Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. A single lap should be completed each time you hear this sound. Remember to run in a straight line, and run as long as possible.
The greatest biodiversity on Earth is found in the tropical rainforest biome
