a boy of mass 40kg and a girl of mass 30kg play on the seesaw of negligible weight. if the boy sits 270cm from the pivot of the seesaw, where must the girl sit to make it balance

In physics the desire of an object to keep doing what it is doing is termed?

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?

A- a of 8.00 cm a of 34.0 nc. a , -, a of 25.0 nc is on of a of 15.0 cm .be toto aof ? a) b) c) j d) e)