Iron + Hydrochloric acid --> ?

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?

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force