The oldest known elements in the periodic table are the ones with
A) the lowest atomic numbers.
B) the highest atomic numbers.
C) odd looking atomic symbols.
D) atomic symbols that match their modern names.
Answer: C
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If the electric field is zero everywhere inside a region of space, the potential must also be zero in that region
A) True B) False
The first molecules of RNA were probably made
A) on the surfaces of clays or other minerals B) deep within the earth C) in the atmosphere D) in space and then transported to the Earth in meteorites
A 30-?F capacitor is charged to an unknown potential V0 and then connected across an initially uncharged 10-?F capacitor. If the final potential difference across the 10-?F capacitor is 20 V, determine V0.
A. 13 V B. 27 V C. 20 V D. 29 V E. 60 V
A plane is headed eastward at a speed of 156 m/s. A 20.0 m/s wind is blowing southward at the same time as the plane is flying. The velocity of the plane relative to the ground is
A) 157 m/s at an angle 7.31° south of east. B) 157 m/s at an angle 7.31° east of south. C) 155 m/s at an angle 7.36° south of east. D) 155 m/s at an angle 7.36° east of south. E) 157 m/s at an angle 7.36° south of east.