Just before a storm is classified as a fully developed hurricane, it is in the tropical ____ stage
A) depression
B) disturbance
C) storm
D) cyclone
C
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Two charged particles 1 m apart exert a 2-N force on each other. If the particles are instead 0.25m apart, the force on each particle will be
A. 8.0 N. B. 4.0 N. C. 2.0 N. D. none of the above
Which of the following statements is not true about a neutralization reaction?
A. One molecule of acid neutralizes one molecule of base. B. Water is always formed in a neutralization reaction. C. A neutralization is the reaction of a hydroxide ion with a proton. D. All of the above are true. E. None of the above are true.
What is necessary for a mineral to cement rock grains together?
A) The cement mineral and the grains must be similar in type. B) The cement mineral must be a covalently-bonded mineral. C) The cement mineral must be dissolved in water. D) The cement mineral must have the same type of bonding as the grains.
Which of the following parts of an atom has a negative charge?
a. Proton b. Neutron c. Electron d. Hydrogen