physixxx As problem!!

[Mueez]

any1 help me with q.4part d
http://www.xtremepapers.me/CIE/Internat ... 7_qp_2.pdf


also tell me, how many significant figures should answer b in physixx p2 questions

 

[libra94]

its best to use 3 s.f...
but that depends on the question too!

 

[Mueez]

thanxxxx... a l0t