A spool has string wrapped around its center axle and is sitting on a horizontal surface. If the string is pulled in the horizontal direction when tangent to the bottom of the axle, the spool will
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In the late 1990's, it was discovered from distances of ___________ in distant galaxies that the expansion of the Universe is ___________
a. Cepheid variables; accelerating b. Cepheid variables; decelerating c. supernovae; accelerating d. supernovae; decelerating
The process of converting a sequence of nucleotides in a section of DNA to a sequence of nucleotides in RNA, as a precursor to protein synthesis is called
A) encryption B) translation C) deciphering D) transcription
In organic molecules, a bromine atom will normally form how many bonds?
a. 2 b. 3 c. 4 d. 1 e. 0
Two tiny particles having charges of +7.00 ?C and -9.00 ?C are placed along the y-axis. The +7.00-µC particle is at y = 0.00 cm,
and the other particle is at y = 40.00 cm. Where must a third charged particle be placed along the y-axis so that it does not experience any net electric force due to the other two particles? A) 0.200 m B) 2.99 m C) -0.187 m D) -2.99 m E) 0.187 m