What is the displacement of an airplane that takes off and ascends 10,000 feet in the air but, to avoid turbulence, descends down 2,000 feet? A. 8,000 feet total
B. 8,000 feet up
C. 18,000 feet total
D. 18,000 feet up

Apossible explanation for a set of facts that can be tested by further investigation is called

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.