This problem requires masses, distances, and other constants that can be found in Appendix C of the text. (a) Calculate the magnitude of the acceleration due to gravity on the surface of Earth (in m/s2) due to the Moon.

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

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Both independent and dependent clauses