Which force binds atoms together to form molecules?
A) gravitational
B) nuclear
C) electric
D) centripetal
E) none of the above
Answer: C
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We find from Gauss's law that the flux through a closed surface
A. is proportional to the net charge enclosed. B. is inversely proportional to the net charge enclosed. C. is proportional to the square root of the charge enclosed. D. is zero. E. is less the larger the closed surface.
Banked Curves: Two horizontal curves on a bobsled run are banked at the same angle, but one has twice the radius of the other. The safe speed (for which no friction is needed to stay on the run) for the smaller radius curve is v. What is the safe speed on the larger-radius curve?
A. v /
B. 2v
C. v
D. v/2
Associations are loose groups of young stars in the spiral arms usually mingled with large clouds of gas and dust.
Answer the following statement true (T) or false (F)
How much heat must be removed from steam to change it to liquid?
A) 540 cal/g B) 600 cal/g C) 830 cal/g D) 1 kcal/g E) 1.8 kcal/g