If the detector is capturing 3.3×108 photons per second at this wavelength, what is the total energy of the photons detected in one hour? Express your answer using two significant figures.

Explanation:

First of all, we have to calculate the energy of each photon, given by

where

is the Planck constant

is the speed of light

is the wavelength

Substitutitng,

The problem says that the detector captures photons/second; since there are 3600 seconds in 1 hour, the number of photons detected per hour is

And so, the total energy of the photons detected in one hour is:

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.

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