A hydrogen atom in a galaxy moving with a speed of 6.65×106 m/ away from the Earth emits light with a wavelength of 5.13×10−7 m. What wavelength would be observed on Earth from that hydrogen atom?

The observed wavelength on Earth from that hydrogen atom is .

Explanation:

Given that,

The actual wavelength of the hydrogen atom,

A hydrogen atom in a galaxy moving with a speed of,

We need to find the observed wavelength on Earth from that hydrogen atom. The speed of galaxy is given by :

is the observed wavelength

So, the observed wavelength on Earth from that hydrogen atom is . Hence, this is the required solution.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

where is the photo and the answer choices?