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3 years ago

What Converts sound to a signal in a telephone

1 answer:

6 0

The part you talk into, that converts the sound of your voice
into an electrical signal, is a tiny microphone.

-- The sound waves from your voice are ripples in the air.

-- In most microphones, there's a tiny coil of wire hanging
between the ends of a tiny magnet.

-- When the ripples in the air hit the little coil of wire, they
make it vibrate (wiggle) slightly.

-- When a coil of wire wiggles in the field of a magnet,
a current flows in the wire.

There's your electrical signal !

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Fun facts are,

777dan777 [17]

Answer:

that is cool and i have one interesting fact

Explanation: North Korea and Cuba are the only places you can't buy Coca-Cola

8 0

3 years ago

Read 2 more answers

Mt. Asama, Japan, is an active volcano. In 2009, an eruption threw solid volcanic rocks that landed 1 km horizontally from the c

Nata [24]

Answer:

a) 69.3 m/s

b) 18.84 s

Explanation:

Let the initial velocity = u

The vertical and horizontal components of the velocity is given by uᵧ and uₓ respectively

uᵧ = u sin 40° = 0.6428 u

uₓ = u cos 40° = 0.766 u

We're given that the horizontal distance travelled by the projectile rock (Range) = 1 km = 1000 m

The range of a projectile motion is given as

R = uₓt

where t = total time of flight

1000 = 0.766 ut

ut = 1305.5

The vertical distance travelled by the projectile rocks,

y = uᵧ t - (1/2)gt²

y = - 900 m (900 m below the crater's level)

-900 = 0.6428 ut - 4.9t²

Recall, ut = 1305.5

-900 = 0.6428(1305.5) - 4.9 t²

4.9t² = 839.1754 + 900

4.9t² = 1739.1754

t = 18.84 s

Recall again, ut = 1305.5

u = 1305.5/18.84 = 69.3 m/s

7 0

3 years ago

A superhero swings a magic hammer over her head in a horizontal plane. The end of the hammer moves around a circular path of rad

Korolek [52]

Answer:

9.21954 m/s

54 m/s²

Angle is zero

Explanation:

r = Radius of arm = 1.5 m

$\omega$ = Angular velocity = 6 rad/s

The horizontal component of speed is given by

$v_h=\omega r\\\Rightarrow v_h=6\times 1.5\\\Rightarrow v_h=9\ m/s$

The vertical component of speed is given by

$v_v=2\ m/s$

The resultant of the two components will give us the velocity of hammer with respect to the ground

$v=\sqrt{v_h^2+v_v^2}\\\Rightarrow v=\sqrt{9^2+2^2}\\\Rightarrow v=9.21954\ m/s$

The velocity of hammer relative to the ground is 9.21954 m/s

Acceleration in the vertical component is zero

Net acceleration is given by

$a_n=a_h=\omega^2r\\\Rightarrow a_n=6^2\times 1.5\\\Rightarrow a_n=54\ m/s^2$

Net acceleration is 54 m/s²

As the acceleration is towards the center the angle is zero.

3 0

2 years ago

What effect will the north pole of one magnet have on the north pole of another magnet?

Y_Kistochka [10]

Answer:

Repulsion

Explanation:

Every magnet has two poles: North and South. Magnets have a property that they attract or repel another magnet and iron-nickel objects. But whether two magnets will attract or repel each other depends on how they are brought together. If unlike poles are brought near the magnets will attract. If like poles are brought near then they will repel each other.

Here north pole of one magnet will repel north pole of another magnet.

3 0

3 years ago

A stone is tossed horizontally from the highest point of a 95 m building and lands 105 m from the base of the building. Ignore a

aalyn [17]

Answer:

A) t = 4.40 s , B) v = 23.86 m / s , c) v_y = - 43.12 m / s , D) v = 49.28 m/s

Explanation:

This is a projectile throwing exercise,

A) To know the time of the stone in the air, let's find the time it takes to reach the floor

y = y₀ + $v_{oy}$ t - ½ g t²

as the stone is thrown horizontally v_{oy} = 0

y = y₀ - ½ g t²

0 = y₀ - ½ g t²

t = √ (2 y₀ / g)

t = √ (2 95 / 9.8)

t = 4.40 s

B) what is the horizontal velocity of the body

v = x / t

v = 105 / 4.40

v = 23.86 m / s

C) The vertical speed when it touches the ground

v_y = $v_{oy}$ - g t

v_y = 0 - 9.8 4.40

v_y = - 43.12 m / s

the negative sign indicates that the speed is down

D) total velocity just hitting the ground

v = vₓ i ^ + v_y j ^

v = 23.86 i ^ - 43.12 j ^

Let's use Pythagoras' theorem to find the modulus

v = √ (vₓ² + v_y²)

v = √ (23.86² + 43.12²)

v = 49.28 m / s

we use trigonometry for the angle

tan θ = v_y / vₓ

θ = tan⁻¹ (-43.12 / 23.86)

θ = -61

7 0

3 years ago