A soil composed of flattened soil particles will most likely have a
A) high porosity.
B) low porosity.
C) high permeability.
D) low hydraulic conductivity.
Answer: D
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Indicate whether the statement is true or false
The object shown below has mass m and velocity 
. The direction of its angular momentum vector with respect to an axis perpendicular to the page through point O is
A. downwards. B. to the right. C. into the page. D. up out of the page. E. counterclockwise.
A parallel plate capacitor is connected to a battery and charged to voltage V. Leah says that the charge on the plates will decrease if the distance between the plates is increased while they are still connected to the battery. Gertie says that the charge will remain the same. Which one, if either, is correct, and why?
A. Gertie, because the maximum voltage is determined by the battery. B. Gertie, because the capacitance of the capacitor does not change. C. Leah, because the capacitance decreases when the plate separation is increased. D. Leah, because the capacitance increases when the plate separation is increased. E. Neither, because the charge increases when the plate separation is increased.
Which of the following describes a star with a hydrogen-burning shell and an inert helium core?
A) It is a red giant that grows in luminosity until it dies in a planetary nebula. B) It is a subgiant that gradually grows dimmer as its hydrogen-burning shell expands and cools. C) It is a subgiant that grows in luminosity until helium fusion begins in the central core. D) It is what is known as a helium-burning star, which has both helium fusion in its core and hydrogen fusion in a shell.