Find the debroglie wavelength of an electron with 4.0 ev.

Explanation:

It is given that,

Voltage,

De broglie wavelength in terms of voltage is given by :

m and e are the mass and charge on electron. So,

So, the De broglie wavelength of an electron is 1.53 meters. Hence, this is the required solution.      

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.

im guessing the west of station b