In the image below, which objects would have a greater gravitational force between them, Objects A and B, or Objects B and C? Give one supporting detail for your answer. Object A
10 kg
Object B
30 kg
Object
30 kg

Air flows upward in the wick of a lantern because of the liquid property called

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.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false