Is the work energy flowing into or out of the gas in process 
positive (A) or negative (B)?
(A) Positive
(B) Negative
(A) Positive
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Discuss the advantages and disadvantages of use of herbicides to replace hand weeding
What will be an ideal response?
The energy per unit volume in an EM wave is
A) equally divided between the electric and magnetic fields. B) almost entirely in the electric field. C) indeterminate. D) almost entirely in the magnetic field. E) zero.
Betelgeuse is the bright red star representing the left shoulder of the constellation Orion. All the following statements about Betelgeuse are true. Which one can you infer from its red color?
A) It is moving away from us. B) Its surface is cooler than the surface of the Sun. C) It is much more massive than the Sun. D) It is much brighter than the Sun.
What is (are) the unit(s) for the diffusion constant?
a. m2 b. m2/s c. It is unitless. d. m/s1/2