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4 years ago

Why does sound move fastest in solid mediums?

Physics

2 answers:

Thepotemich [5.8K]4 years ago

8 0

The particles are closest together in solids. Think about water. You can pass your hand through steam because there is a lot of space between the particles. Liquid water is a little harder to pass through, but it can be done. The particles in ice, however, are so close together that an object cannot pass through it.

Mechanical waves travel fastest through solids and slowest through gases.

Therefore the answer is solids.

Ierofanga [76]4 years ago

7 0

The particles are closest to-gether in a solid formation, so waves travel further as they bump into each other sooner.

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A rotating heavy wheel is used to store energy as kinetic energy. If it is designed to store 1.00 x 106 J of kinetic energy when

valkas [14]

We know, $1\ rpm = \dfrac{2\pi}{60} \ rad/s$ .

$64\ rpm\ is = \dfrac{2\pi}{60}\times 64\ rad/s\\\\= \dfrac{32\pi}{15}\ rad/s$

We know, kinetic energy is given by :

$K.E = \dfrac{I\omega^2}{2}\\\\I = \dfrac{2(K.E)}{\omega^2}\\\\I = \dfrac{2\times 10^6}{\dfrac{32}{15}\times \pi}\\\\I = 298415.52 \ kg \ m^2$

Hence, this is the required solution.

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3 years ago

Which statement is true?

ratelena [41]

Statement ' A ' is true.

8 0

3 years ago

Read 2 more answers

If a gun is sighted to hit targets that are at the same height as the gun and 75 m away at the same height, how low, as a positi

Vinvika [58]

Answer:

y=-1.66 m

Explanation:

We know that

Range R

$R=\dfrac{u^2sin2\theta }{g}$

Here given that

u= 275 m/s

R=75 m

Now by putting the values

$R=\dfrac{u^2sin2\theta }{g}$

$35=\dfrac{275^2sin2\theta }{9.81}$

θ=0.13°

Now horizontal component of velocity u will be u cosθ.

Horizontal component = 275 cos0.13 = 274.99 m/s

So the time required to cover 180 m in horizontal direction t

180 = 274.99 x t

t=0.65 sec

Now vertical component of velocity u will be u sinθ.

Horizontal component = 275 sin0.13 = 0.62 m/s

So now vertical displacement y will be

$y=u_yt-\dfrac{1}{2}gt^2$

$y=0.62 \times 0.65-\dfrac{1}{2}\times 9.81\times 0.65^2$

y=-1.66 m

5 0

3 years ago

The time needed for a water wave to change from the equilibrium level to the crest is 0.1475 s. What fraction of a wavelength is

dmitriy555 [2]

Answer:

one-fourth of the wavelength

Explanation:

When any wave move form its equilibrium to level to the crest then it covers one-fourth of the wavelength. The waves goes twice to its extreme position, once at the crest and one at the trough.

The midway between the crest and trough is the equilibrium position of the wave. The wave in one cycle covers 360° phase. Here when the wave goes from equilibrium to the crest then the wave covers 90° of the phase.

The given time multiplied by 4 gives the time period of the wave.

3 0

3 years ago

In a lab environment, you are investigating the impulse of a force exerted on a brick when the brick's speed is reduced from 2.5

BabaBlast [244]

Answer:

The impulse is the same in both situations.

Explanation:

As we know that impulse is defined as change in momentum

so it is given as

$\Delta P = m(v_f - v_i)$