( ( The ( charged rods ) ) ( ( can ( be ( ( ( used ( with ( ( ( the ( foil ( leaf electroscope ) ) ) and ) projector ) ) ) , ) ( as ( shown above ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ charged) (NNS rods)) (VP (MD can) (VP (VB be) (VP (VBN used) (PP (IN with) (NP (NP (DT the) (NN foil) (NN leaf) (NN electroscope)) (CC and) (NP (NN projector)))) (, ,) (SBAR (IN as) (S (VP (VBN shown) (PP (IN above)))))))) (. .)))
The charged rods can be used with the foil leaf electroscope and projector, as shown above.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN electroscope)) (VP (VBZ is) (VP (VBN used) (S (VP (TO to) (VP (VB study) (NP (NN charge))))))) (. .)))