It makes an echo and it circles around it.
D. it is thickest in the middle
The answer would be B. Magnetic fields are invisible they cannot be directly observed
Answer:
A hypothesis is a basically a theory proposed to a subject or refrence to an act with limited evidences.
Distance= Time×Speed
= 1800×1.5
= 2700 m
I am not sure it's right. the question itself is confusing.
