What is the shape factor?
What will be an ideal response?
In radiation, the shape factor, or view factor, refers to the fraction of a surface
which can “see” another surface.
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Imagine that in the distant future you (on earth) are watching a transmission from Pluto, which at the time is 5.0 light-hours from earth. You notice that a clock on the wall behind the person speaking in the video reads 12:10 p.m. You note that your watch reads exactly the same time. Is the station clock synchronized with your watch?
A. Yes, it is. B. No, it isn’t. C. The problem doesn’t give enough information to tell.
The atmospheric pressure on Venus
A) shows an extreme change with the seasons. B) is much lower than on Earth. C) is about the same as on Mercury. D) is much higher than on Earth. E) causes variations in surface temperature.
Which dwarf planet did the NASA Dawn spacecraft enter into orbit around in 2015?
A) Pluto B) Eris C) Ceres D) Haumea
Light waves are
A) beams of moving electrons and other charged particles. B) beams of moving atoms. C) traveling disturbances in an electromagnetic field. D) traveling disturbances in the ether. E) traveling disturbances in the air.