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WINSTONCH [101]

3 years ago

7

A sound wave traveling through a solid material has a frequency of 400 hertz. the wavelength of the sound wave is 2 meters. what

is the speed of sound in the material?
a. 200 m/s
b. 200 Hz
c. 800 m/s
d. 800 Hz

1 answer:

Pepsi [2]3 years ago

3 0

Answer:

c. 800m/s

Explanation:

v = f × /\

v = 400 × 2

v = 800m/s

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According to the second law of thermodynamics, what is true of entropy in all natural systems?

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Entropy is randomness.
It mostly applies to gas particles because they move around randomly and freely

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4 years ago

A standing wave of 603 Hz is produced on a string that is 1.33 m long and fixed on both ends. If the speed of the waves on this

kondaur [170]

Answer:

4.

Explanation:

Given,

frequency of standing wave = 603 Hz

length of string,L = 1.33 m

speed of the wave, v = 402 m/s

number of antinodes = ?

Wavelength of the standing wave

$\lambda = \dfrac{v}{f}$

$\lambda = \dfrac{402}{603}$

$\lambda = 0.67\ m$

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$n=\dfrac{l}{\frac{\lambda}{2}}$

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7 0

3 years ago

A vector quantity has _____.

Archy [21]

c) both magnitude and direction

8 0

4 years ago

Read 2 more answers

An escaped convict runs 1.70 km due East of the prison. He then runs due North to a friend's house. If the magnitude of the conv

olga2289 [7]

Answer:

The right approach will be "47° north of east".

Explanation:

The given values are:

East of prison

= 1.70 km

Displacement vector

= 2.50 km

Now,

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⇒ $Cos \ \theta =\frac{1.7}{2.5}$

⇒ $=0.68$

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6 0

3 years ago