3 years ago

If the color red has a wavelength of 7.0 107 m. its frequency is

Physics

2 answers:

stepan [7]3 years ago

7 0

I think it’s 5.0.1014

kodGreya [7K]3 years ago

5 0

Answer:

4.3⋅1014 is the answer

Explanation:

λf = c = 2.998e8 m/s (speed of light in vacuum)

f = 2.998e8 / 7e-7 = 4.28e14 Hz (a)

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Blizzard [7]

Explanation:

For the equilibrium:

\rho_{wood}gh-\rho_{oil}g(h-x)-\rho_{water}gx=0ρ

wood

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oil

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2 years ago

A satellite orbits the earth at a speed of 8.0x 10^3m/s . Calculate the period of orbit of the satellite if the distance between

gladu [14]

Hi there!

The period of an orbit can be found by:

$T = \frac{2\pi r}{v}$

T = Period (? s)
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v = speed of the satellite (8000 m/s)

This is the same as the distance = vt equation. The total distance traveled by the satellite is the circumference of its circular orbit.

Let's plug in what we know and solve.

$T = \frac{2\pi (6400000)}{8000} = \boxed{5026.55 s}$

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Nikolay [14]

Answer:

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olga_2 [115]

The answer is:

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V = 86 km/ 1.3 hrs

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I hope this helps!!

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3 years ago