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Finger [1]
2 years ago
7

2. Două surse coerente oscileaza cu frecventa de 1 Hz, iar undele generate de elel se propaga pe suprafața apei cu viteza de 1,

5 m/s . Determinați pentru ce valoare minima a diferenței de drum pe suprafața apei se va observa :a) amplitudinea undelor b) atenuarea undelor
Physics
1 answer:
hammer [34]2 years ago
3 0

Answer:

the correct answer is B

Explanation:

Attenuation We can define the attenuation of a wave as the decrease in its intensity as it moves away from the focus. It is exclusively due to the distribution of its energy over a growing surface. This happens in the aqueous environment or in the water when a wave dissipates.

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A rotating wheel requires a time Δt = [01]_____________________ to rotate 37.0 revolutions. Its angular speed at the end of the
Sidana [21]

Answer:

Explanation:

Initial angular velocity ω₁ = 0 , final angular velocity ω₂ = 75.9 rad /s

angle rotated =  θ

= 37 x 2π

= 74 π

The formula for angular velocity

ω₂² =  ω₁² + 2αθ , α is angular acceleration

75.9² = 0 + 2 α x 74 π

α = 75.9² / 2  x 74 π

= 12.396 rad / s²

8 0
3 years ago
What is SI unit electric current ?​
amid [387]

Answer:

the si unit of electric current is Ampere .the flow of charge in a close circuit is called electric current

4 0
2 years ago
An object accelerates 3 m/s2 , when a force of 6 N acts on it. What is the object’s mass
telo118 [61]

Answer:

<h2>2 kg</h2>

Explanation:

The mass of the object can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{6}{3}  \\  = 2

We have the final answer as

<h3>2 kg</h3>

Hope this helps you

3 0
2 years ago
A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied
Vika [28.1K]

We have that for the Question "A 2kg book is held against a vertical wall. The <em>coefficient </em>of friction is 0.45. What is the minimum force that must be applied on the <em>book</em>, perpendicular to the wall, to prevent the book from slipping down the wal" it can be said that  the minimum force that must be applied on the <em>book is</em>

  • F=44N

From the question we are told

A 2kg book is held against a vertical wall. The <em>coefficient </em>of friction is 0.45. What is the minimum force that must be applied on the <em>book</em>, perpendicular to the wall, to prevent the book from slipping down the wal

Generally the equation for the  Force  is mathematically given as

F=\frac{mg}{\mu}\\\\F=\frac{2*9.8}{0.45}\\\\

F=44N

Therefore

the minimum force that must be applied on the <em>book is</em>

F=44N

For more information on this visit

brainly.com/question/23379286

8 0
2 years ago
When two waves undergo complete, constructive interference, which of the following increases ?
Lostsunrise [7]
A speed cause it would slow down meeting eachother
4 0
3 years ago
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