Explain how the positioning of Earth, moon, and Sun cause lunar and solar eclipses. use your own words please

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.

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

Drag each tile to the correct box. tiles bra i sequence