oi 7 is c...pacemakers regulate heartbeats by sending electrical impulses to the heart muscle, causing it to contract (beat)...thats a deffinition out of a text book...so they can't be lying!!!...or can they??
the exam wasn't as easy as i had expected...and i swear we neva did the Am/FM radio prac. disasters option was good though i thought...i wrote like nearly 5 pages for the 7mark question on earthquakes and bushfires...so yeh all up i rekon i'll get a band 6...well at least i hope...
question 11
question 11 isnt b, coz the message is transmitted as an electromagnetic wave, the answer is c coz it is transformed from EM to electrical when it is received, but apart from that answer i agree with all your otherss and i reckon i went good so yeh...
these r my answers to the multiple choice...
1.c
2.c
3.d
4.a
5.c
6.b
7.c
8.a
9.d
10.b
11.c
12.b
13.d
14.b
15.a
these r pretty similar to urs...so hopefully we r doin ok