What are the only four forces that can affect matter?
What will be an ideal response?
The four forces are gravitational force, electromagnetic force, strong force, and weak force.
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Some texts use the kilogram-mole rather than the gram-mole. What would be the values of the gas constant R and Avogadro's number NA using the kg-mole?
What will be an ideal response?
Under what circumstances can differentiation occur in a planet?
A) The planet must have a rocky surface. B) The planet must be made of both metal and rock. C) The planet must have an atmosphere. D) The planet must be geologically active, that is, have volcanoes, planetquakes, and erosion from weather. E) The planet must have a molten interior.
The near point with age usually
A) steadily decreases. B) approaches 25. cm. C) steadily increases. D) increases and then decreases.
The substance that comes from a nuclear reactor which is used to generate power is
A. graphite. B. radioactive materials. C. enriched uranium. D. high-pressure steam.