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2 years ago

What is the frequency of a wave with speed 3m/s and wavelength 6m?

Physics

1 answer:

Korolek [52]2 years ago

3 0

The frequency of the radio wave is

Explanation:

Let's use the this formula:

C represents the speed of light, which has a value of approximately

3.00

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

−

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

3.00

(

)

−

1The frequency of the radio wave is

Explanation:

Let's use the this formula:

C represents the speed of light, which has a value of approximately

3.00

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

−

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

3.00

(

)

−

1The frequency of the radio wave is

Explanation:

Let's use the this formula:

C represents the speed of light, which has a value of approximately

3.00

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

−

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

3.00

(

)

−

1The frequency of the radio wave is

Explanation:

Let's use the this formula:

C represents the speed of light, which has a value of approximately

3.00

represents the wavelength and the units should be in meters.

v represents the frequency, which should have units of

−

. Hz is hertz or reciprocal seconds.

Now let's rearrange the equation to solve for v:

3.00

(

)

−

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You can obtain a rough estimate of the size of a molecule by the following simple experiment. Let a droplet of oil spread out on

Marat540 [252]

Answer:

The diameter of the molecule of oil is $1.405 10 ^{-9} \ m$

Explanation:

We define density as

$\rho = \frac{mass}{volume}$

So, the volume for our oil will be

$volume = \frac{mass}{\rho}$

$volume = \frac{7.62 \ 10^{-7} \ kg}{ 912 \ \frac{kg}{m^3} }$

$volume = 8.355 \ 10 ^{-10} \ m^3$

the volume for a cylinder with radius r and height h is

$volume = \pi r^2 h$

So, we can obtain the height of the droplet of oil as:

$h = \frac{volume}{\pi r^2}$

the radius is

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3 years ago

Unlike fossil fuels, biomass fuels _____.

dezoksy [38]

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3 years ago

Read 2 more answers

A train traveling at 25 m/s is blowing its whistle at 440 Hz as it crosses a level crossing. You are waiting at the crossing and

ohaa [14]

Answer:

b) 472HZ, 408HZ

Explanation:

To find the frequencies perceived when the bus approaches and the train departs, you use the Doppler's effect formula for both cases:

$f_o=f\frac{v_s+v_o}{v_s-v}\\\\f_o=f'\frac{v_s-v_o}{v_s+v}\\\\$

fo: frequency of the source = 440Hz

vs: speed of sound = 343m/s

vo: speed of the observer = 0m/s (at rest)

v: sped of the train

f: frequency perceived when the train leaves us.

f': frequency when the train is getTing closer.

Thus, by doing f and f' the subjects of the formulas and replacing the values of v, vo, vs and fo you obtain:

$f=f_o\frac{v_s-v}{v_s+v_o}=(440Hz)\frac{340m/s-25m/s}{340m/s}=408Hz\\\\f'=f_o\frac{v_s+v}{v_s-v_o}=(440Hz)\frac{340m/s+25m/s}{340m/s}=472Hz$

hence, the frequencies for before and after tha train has past are

b) 472HZ, 408HZ

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3 years ago

A flat sheet of paper of area 0.250 m2 is oriented so that the normal to the sheet is at an angle of 60 to a uniform electric fi

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Answer:

a. 1.75 Nm²/C

b. Yes.

Explanation:

a. Electric Flux is given as:

Φ = E*A*cosθ

Where E = electric flux

A = Surface area

Φ = 14 * 0.25 * cos60

Φ = 1.75 Nm²/C

b. Yes, the shape of the sheet will affect the Flux through it. This is because flux is dependent on area of the surface and the area is dependent on the shape of the surface.

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I know the enthalpy of a reaction is 23kj/mol. Initially the reaction is taking place at 273 k. To what temperature do i need to

Vladimir79 [104]

Answer:

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Explanation:

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To find this value, we will need to use the Van’t Hoff equation.

Please check attachment for complete solution

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