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3 years ago

How are wavelength and frequency related for a wave moving at a constant speed?

1 answer:

soldier1979 [14.2K]3 years ago

6 0

Mathematically, to compute for the wavelength, λ, we have

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

where v is the velocity and f is the frequency.
As we can see here, given that velocity is constant, wavelength increases as frequency decreases. This shows that wavelength is inversely proportional to frequency.

Answer: Wavelength and frequency are inversely related to each other.

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A rod made up of certaon metall which had coefficiebt of volume expansion is 33×10^-6 per celsius degrer.The rod is 100 meter lo

Irina-Kira [14]

Answer:

100.11 m

Explanation:

Given:

Coefficient of volume expansion, $\alpha_{v}=33\times10^{-6}$ /°C.

Initial length of rod, $l=100 m$

Change in temperature, ΔT= $(90-(-10))=100$ °C

We know that,

$\alpha_{v}=3\alpha_{L}\\\alpha_{L}=\frac{\alpha_{v}}{3}\\\alpha_{L}=\frac{33\times10^{-6}}{3}=11\times10^{-6}$ /°C

Here, $\alpha_{L}$ is the coefficient of linear expansion.

Now, we know that,

Change in length (Δl) is given as,

$\Delta l=\alpha_L\times L\times\Delta T$

Plug in all the values and solve for $l$ .

This gives,

$\Delta l=11\times10^{-6}\times 100\times100\\\Delta l=0.11 \textrm{ m}$

Therefore, the length of rod after expansion is $L+\Delta l=100+0.11=100.11$ m.

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3 years ago

Which illustration represents high accuracy but low precision? plz help

Mashutka [201]

Answer:

Explanation:

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4 years ago

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Why do astronauts float aboard the international space station?

lianna [129]

They’re falling toward earth & moving forward at about the same velocity. because the downward and forward forces are nearly equal, the astronauts are not pulled in any specific direction, so they float .

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3 years ago

Why does Farm Bureau and other advocacy organization oppose any mandated labeling of biotech crops?

Step2247 [10]

Answer:

I’m. Nog sure

Explanation:

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3 years ago

Which of the following is characteristic of the second stage within a demographic transition?

Elan Coil [88]

The answer is A) The death rate begins to fall, but birth rates remain high for a time.