2 years ago

Find the velocity of a wave that has a wavelength of 2 meters and a frequency of 2.1Hz

Physics

1 answer:

vodomira [7]2 years ago

7 0

It is 4.2 hope i helped

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The planting of trees is determined to soil because it drains the soil of nutrients True or false

frutty [35]

True

~Nightcore
Hope this helped

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2 years ago

Not a question but need a lot of tips

skad [1K]

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2 years ago

Two parallel slits are illuminated by light composed of two wavelengths. One wavelength is λA = 622nm. The other wavelength is λ

Sergio039 [100]

Answer:

$\lambda_{B}=414.67 nm$

Explanation:

In this question we have given

$\lambda_{A}=622nm$

we have to find

$\lambda_{B}=?$

We know that

optical path difference for bright fringe is given as $=n\lambda$

Here,

n is order of fringe

and optical path difference for dark fringe is given as $=(n+.5)\lambda$

since the light with wavelength $\lambda_{A}$ produces its third-order bright fringe at the same place where the light with wavelength $\lambda_{B}$ produces its fourth dark fringe

it means

optical path difference for 3rd order bright fringe= optical path difference for forth order dark fringe

Therefore,

$3\lambda_{A}=(4+.5)\lambda_{B}$ ...............(1)

Put value of $\lambda_{A}$ in equation (1)

$3 \times 622=(4+.5)\lambda_{B}$

$1866=4.5\lambda_{B}$

$\lambda_{B}=414.67 nm$

3 0

2 years ago

I need help with question two

zaharov [31]

I can't see numbers here, so here are all the answers:
1) the frequency is c/λ = 3e8/556e-9 = 5.39e14Hz
2) light travels at <span>299,792,458 m/s. So in nanoseconds it's 0.299792458m. This is about 1/3 of a meter which is about one foot.
3) length is L = ct = (</span>299,792,458 m/s)(6e-15) = 1.799e-6m or 1.799μm

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2 years ago

Which three things are related according to Newton's second law? force, mass, and acceleration force, matter, and acceleration f

Orlov [11]

Answer:

Force mass and acceleration

Explanation:

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2 years ago