A submarine uses sub-radio communication at 200 Hz. What is the wavelength of the electromagnetic waves in water with index of refraction 1.333?

Wavelength in water,

Explanation:

Given that,

A submarine uses sub-radio communication at 200 Hz.

The index of refraction, n = 1.333

The refractive index of a medium is given by :

So, the wavelength of the electromagnetic waves in water is .

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.