Grain used for producing ethanol cannot be used in any way other than as humus
What will be an ideal response?
There is a residue that can be used as animal feed, as discussed in the chapter.
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Which of the following happened first (after the Big Bang)?
A) Molecules formed. B) Neutral atoms formed. C) Protons formed. D) Helium formed.
Total internal reflection
A. Can occur when light travels from lower index of refraction into higher index of refraction. B. Can occur when light travels from higher index of refraction into lower index of refraction. C. Can occur in any combination of indices of refraction. D. Never occurs.
How does the thickness of a lens relate to it being converging or diverging?
What will be an ideal response?
Charges q, q, and –q are placed on the x axis at x = 0, x = 2 m, and x = 4 m, respectively. At which of the following points does the electric field have the greatest magnitude?
a. x = 3 m b. x = 1 m c. x = 5 m d. The electric field has the same magnitude at all three positions.