In which situation are waves transmitted? A. A curtain blocks light from a window.
B. A camp fire lights up a cave.
C. Leaves look green in sunlight.
D. Ice cream melts on a hot day.
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The density of a liquid could be found by using

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?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.