The colors of a neon light arise because it is a(n) ________ spectrum
Fill in the blank(s) with correct word
emission (or bright line)
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The diffusion constant for water in air is What is the distance a water molecule can travel by diffusion in 10min?
A. 17 cm B. 20 cm C. 25 cm D. 31 cm E. 36 cm
A pair of sunglasses and a pair of clear reading glasses are left in the sunlight. The hotter glasses will be the
A) sunglasses. B) reading glasses. C) both of these D) neither of these
The electrical conductivity of a metal is not proportional to which of the following?
(a) Free-electron density (b) Electron mobility (c) Electron charge (d) Atomic number
Which is brighter in our sky, a star with apparent magnitude 2 or a star with apparent magnitude 7? By how much is the star brighter?
What will be an ideal response?