Can some one please help me out? In Oct/Nov 2007...there are a two questions i don't understand. Question 7 and 21. Help would be appreciate it!
Question 7.
The mass of the drum is 200 WHEN EMPTY, when full of the spirit, it is 1000kg, so this means that the mass of the spirit is....800kg's
And since density=Mass/Volume, so, Density=
800kg/1cm3 which is equal to
800Kg/Cm3Answer: C
Question 21.
The line should represent the amplitude, because the aomplitude is the line that is in the middle and ANY WAVE THAT RESTS WILL BE ALINE WITH THE AMPLITUDE, Answer:B
Hope I Helped, Dont Forget +REP
Best Wishes