Its negative
:)))))))))))))
The accurate answer is
The psychiatrist that <span>believed the environment was more important to a child's intellectual development than biology was "D" </span>Sigmund Freud.
Answer:
3.117 m
Explanation:
Given that:
the distance of separation between speaker A and speaker B (L) = 6.69 m
Frequency (F) = 750 -Hz tone
Velocity of speed of sound = 343 m/s
The distance from Speaker A to the first point (L₁) on the line can be calculated by using the formula:

where A = 
we have:






∴ the distance from speaker A to the first point on the line between the speakers where constructive interference occurs = 3.117 m
Answer:
The two answers are in the explanation
Explanation:
Please find the attached files for the solution
If im correct the answer is gravity
and wind resistance if you lift it fast
~~~hope this helps~~~
~~davatar~~