Which of the following is not a "hard" shoreline protection measure?
A) groins.
B) beach nourishment.
C) jetties.
D) breakwater.
B
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How does the wave model of electrons orbiting the nucleus account for the fact that the electrons can have only discrete energy values?
A) Electrons are only able to vibrate at particular frequencies. B) When an electron wave is confined, it is reinforced only at particular frequencies. C) The energy values of an electron only occur where its wave properties and probability clouds are mutually reinforcing. D) The wave model accounts for the types of orbitals an electron may occupy, not its energy levels.
As you move from the Appalachian mountains towards the Atlantic Ocean, the depositional layers of sediments
beneath you ____. a. remain a constant thickness b. gradually become thicker c. gradually become thinner d. rapidly become thicker e. rapidly become thinne
The critical circle in a stability analysis would be the circle with the:
a. highest resisting moments b. highest driving moments c. highest safety factor d. lowest safety factor
Which of the following compounds has an extremely disagreeable odor?
A) CH3CH2OH B) CH3CH2OCH2CH3 C) CH3CH2SH D) none of these