Answer:
Observers ahead of the wave observe an apparent increase in wave frequency
Explanation:
This is the Doppler Effect. The frequency of a wave increases when the source approaches the observer and decreases as the source recedes.
B, C, and D are wrong. Observers behind the source notice a decrease in frequency.
The living things SPONCH stands for is <span>sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen.</span>
I hope this help but the metalloids is gruop five if that what your asking if not i will answer the other question for you
Answer:
WHAT LANGUAGE IS THIS MATE
Explanation:
I have not learned that yet i wish i could help so sorry though good luck