The robot hooru is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of . hooru's surface area is and the emissivity of its surface is . ignore the radiation hooru absorbs from the cold universe. what is hooru's temperature?

150.427 K

Explanation:

The complete question is as follows:

The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of . HooRU's surface area is and the emissivity of its surface is . Ignore the radiation HooRU absorbs from the cold universe. What is HooRU's temperature?

This problem can be solved by the Stefan-Boltzmann law for real radiator bodies:  

(1)

Where:

is the energy radiated by HooRU

is the Stefan-Boltzmann's constant.  

is the Surface of the robot

is the robot's emissivity

is the effective temperature of the robot (its surface absolute temperature) in Kelvin

So, we have to find from (1):

(2)

Finally:

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas