Answer:
They both produce heat energy.
D. Magnetism this is shown by the planet's magnetic pull on moons and space debris.
Answer:
Repel
Unlike
Atrract
Fur
Balloon
Positivley charged
negative
postive
neutral
Explanation:
It goes from top to bottom
Answer:
The Answer is A They can damage hearing.
Explanation:
I took the Test
Answer:
7 m .
Explanation:
For destructive interference
Path difference = odd multiple of λ /2
Wave length of sound from each of A and B.
= speed / frequency
λ = 334 / 172 = 2 m
λ/2 = 1 m
If I am 1 m away from B , the path difference will be
8 - 1 = 7 m which is odd multiple of 1 or λ /2
So path difference becomes odd multiple of λ /2.
This is the condition of destructive interference.
So one meter is the closest distance which I can remain at so that i can hear destructive interference.
