Answer:
Frequency of the sound = 22.97 kHz
Explanation:
Sound waves are traveling waves and they can be modeled as
A(r, t) = A₀(r)sin(kr - ωt + ∅₀)
Where A₀ is the initial amplitude of the wave, r is the distance, ωt is the frequency and ∅₀ is the initial phase shift
First we need to find out the phase difference (Δ∅) between two waves at different distances.
Δ∅ = 2πΔr/λ + Δ∅₀
When you stand centered between the two waves you hear maximum intensity of sound so the the two waves must be in phase
Δ∅ = 2πΔr/λ + 0
λ = 2πΔr/Δ∅
The distance when listening in front of the speakers is given by
Δr = r2 - r1
r1 = 6.0 mm = 0.006 m
r2 = √(0.012²+0.006²) = 0.0134 m
Δr = r2 - r1 = 0.0134 - 0.006 = 0.0074 m
λ = 2π*0.0074/Δ∅
The phase difference Δ∅ = π
λ = 2π*0.0074/π
λ = 0.0148 m
As we know the relation between frequency and wavelength is given by
f = c/λ
Where c = 340 m/s is the speed of light
f = 340/0.0148
f = 22973 Hz
f = 22.97 kHz
Answer and Explanation:
The answer is <u>D) Alpha and Gamma</u>
Gamma radiation does not cause transmutations.
A <u>transmutation</u> is the <u>conversion of an atom of one element to an atom of another. This generally occurs through nuclear reacting.</u>
There are three main types of radiation: alpha, beta, and gamma. Both beta and alpha decay cause changes to the mass and atomic numbers. This results in a transmutation. Gamma radiation, however, does not.
Gamma radiation is the result of a gamma ray. In essence, the nucleus emits a high-energy proton. This is very penetrating and can only be stopped by aluminum, lead, soil, water, and concrete. This type of radiation does not change the element and, therefore, does not cause a transmutation.
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
Answer:
1) B
2) A, B, and D
Explanation:
1) The atomic number provides the number of protons and electrons, since the number of the two are the same.
2) You DO NOT know whether or not the protons are in the nucleus (they are) based on the atomic number, that's just prior knowledge.
Answer:
This world shall know PAIN
About 15 mpg is your answer