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Mariana [72]
3 years ago
10

Who is the president of Africa

Physics
2 answers:
defon3 years ago
8 0
Currently, the president of Africa is Jacob Gedleyihlekisa Zuma.
djverab [1.8K]3 years ago
8 0
Jacob Gedleyihlekisa Zuma is the president of South Africa. He was elected in 2009, and reelected in 2014.
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Two speakers are spaced 15 m apart and are both producing an identical sound wave. You are standing at a spot as pictured. What
IgorLugansk [536]

Answer:

Frequency is 213.04\ s^{-1}.

Explanation:

Distance between source 1 from the receiver , S_1 =\sqrt{10^2+22^2}=24.17\ m.

Distance between source 2 from the receiver , S_2=\sqrt{5^2+22^2}=22.56\ m.

Now ,

Path difference , r = S_1-S_2=24.17-22.56=1.61\ m.

We know, for constructive interference path difference should be integral multiple of wavelength .  

Therefore, r=n\times \lambda

It is given that n = 1,

Therefore, \lambda=1.61\ m.

Frequency can be found by , \nu=\dfrac{v}{\lambda}= \dfrac{343}{1.61}=   213.04\ s^{-1} .

Hence, this is the required solution.

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3 years ago
An object with a mass of 5.0 kg is accelerating toward the surface of Earth at a rate of 9.8 m/s^2
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The answer is A. Force is equal to mass x acceleration. The acceleration due to gravity is a constant so multiplying the mass by 2 would double the force.
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4 years ago
The natural force that causes you to lose power as you climb a hill is known as inertia.
Juliette [100K]
Yeah your answer is correct

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¿Cuál es el lado positivo sobre el auge de la <br><br>industrialización<br>​
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Answer:

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Explanation:

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