Why is thermal conductivity not affected to a significant extent by material density?
What will be an ideal response?
Thermal conductivity seems to not be strongly dependent on the material
density since thermal conductivity is an index of heat or energy transfer
between adjacent molecules and while the distance separating these molecules
is dependent on density, it is not strongly so.
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Explain how the scientific notation of 4.52 x 10^8 is the same as 452 x 10^6
What will be an ideal response?
If distance is speed × time and light takes 8 minutes to travel from the Sun to Earth and over 4 hours to travel from the Sun to the planet Neptune, what is the distance from the Sun to Neptune?
a. 5 AU b. 30 AU c. 30 ly d. 5 ly e. 0.6 ly
Which of the following properties of a star can be measured directly, during a single night at the telescope?
A) parallax B) distance C) apparent brightness D) luminosity
The break-up of Pangaea had worldwide consequences with the exception of
A) the lowering of sea level. B) a rise in sea level. C) the divergence and evolution of new species. D) climate change.