The configuration 
is for what element?
A. B
B. F
C. Ne
D. Al
E. Cr
D. Al
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At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration has an angular velocity of 2.0 rad/s. Two seconds later it has turned through 5.0 complete revolutions. What is the angular acceleration of this wheel?
a. 17 rad/s2 b. 14 rad/s2 c. 20 rad/s2 d. 23 rad/s2 e. 13 rad/s2
What happens to two neutron stars that are orbiting so close together they emit gravitational waves?
A) The neutron stars will fly apart from one another. B) It has no effect. C) The neutron stars will spiral together and merge. D) The neutron stars will recombine and form a new, young star.
Calculate the current through a 10.0-m long 22 gauge (having radius 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. The resistivity of nichrome is 100 × 10-8 ? ? m
A) 17.5 A B) 30.9 A C) 61.8 A D) 388 mA E) 776 mA
Some scientists speculate that super-Earths and water worlds might be habitable at greater distances from their stars than Earth-size planets. Why?
A) Their larger sizes might allow them to retain hydrogen atmospheres. B) Their larger sizes mean they might have more of the ingredients needed for life. C) For the water worlds, at least, they are certain to have oceans no matter how far they are from a star. D) These planets may retain more internal heat than Earth, which might drive greater geological activity.