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3 years ago

As the temperature of a medium increases, the speed of the sound wave

2 answers:

8 0

Answer : As the temperature of a medium increases, the speed of the sound wave increases because the particles bump into each other more often.

Explanation :

The dependency of the speed of the sound wave and the temperature of the medium is :

$v=\sqrt{\gamma\ R\ T}$

Where

$\gamma$ = ratio of specific heat

R is gas constant

T is the temperature

The speed of the wave is directly proportional to the temperature. As the temperature of a medium increase, the speed of the sound increase. The particles start vibrating faster. Hence, they bump into each other.

Hence, the correct option is (A).

enyata [817]3 years ago

7 0

Answer:

A.....

Explanation:

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An atom in its ground state is excited when it absorbs a single photon of light. The atom then relaxes back to the ground state

aivan3 [116]

Answer: Option (a) is the correct answer.

Explanation:

The given data is as follows.

wavelength of red photon ( $\lambda_{1}$ ) = 700 nm

wavelength of infrared photon ( $\lambda_{2}$ ) = 1750 nm

Therefore, calculate the wavelength of absorbed photon as follows.

$\frac{1}{\lambda_{abs}} = \frac{1}{\lambda_{1}} + \frac{1}{\lambda_{2}}$

= $\frac{1}{700} + \frac{1}{1750}$

= $\frac{2450}{1225000}$

or, $\lambda_{abs}$ = $\frac{1225000}{2450}$

= 500 nm

Therefore, we can conclude that the wavelength of the absorbed photon is 500 nm.

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3 years ago

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What common characteristic is generally shared by the elements at the center of a period?

Gnom [1K]

I think the correct answer would be C. The common characteristic that is shareed by the elements found at the center of a period would be that they are the least reactive species. Having lower value of electronegativity, there is less ionization of the atoms which would also contribute to less reactivity.

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3 years ago

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When might a plot of ln[a] vs time not yield a straight line?

podryga [215]

Considering a reaction:
A → B
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r = -k[A]ⁿ
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ln(r) = -nln([A]) + ln(k)
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4 years ago

What is bromin what is bromine what is bromine

yulyashka [42]

Answer:

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Consider this reaction:

nadya68 [22]

11.7 g hope this helps and have a great day

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2 years ago