What wave shape occurs if the particles travel parallel to the direction of the wave?
1 answer:
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The maximum upward acceleration that the elevator can have without breaking is = 10.36m/s².
<h3>How to calculate maximum upward acceleration?</h3>To calculate the maximum acceleration of the elevator we must take into account Newton's second law and its formula that takes into account the following aspects:
- F = Is the force applied in newtons.
- m = Is the mass of the object in kilograms.
- a = Is the acceleration of the object in meters per second squeared.
- F = m × a
According to the above, we apply the values we have as follows:
- a =
- a =
- a = 10.36 m/s²
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The distance from observer A of intensity of sound 59 db is 28.64 m and the distance from observer B of intensity of sound 83 db is 11.36m
Explanation:
Let's solve this problem in parts
let's start by finding the intensity of the sound in each observer
observer A β = 59 db
β =
where I₀ = W / m²
=
W / m²
Similarly for Observer b
now we use that the emitted power that is constant is the intensity over the area of the sphere where the sound is distributed
P = I A
therefore for the two observers
the area of a sphere is
we substitute the above formula, we get
Let us call the distance from the observer A be to stereo speaker = x, so the distance from the observer B to the stereo speaker = 40- x; we substitute
after solving the above equation we get x = 28.64 m
This is the distance of observer A
similarly The distance from observer B is 35 - x
= 40 - 28.64
= 11.36m
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