W07 Q 3, 6, 16, 22, 25, 37 
thank you
3
X remains at the same direction, but since they asked for X-Y, Y is now at the opposite direction,
The resultant is Z. X goes diagonally right-upwards, and Y now goes horizontally to the left, so Z would be upwards, and hence b is the correct answer.
6
When u look at the meter, as the current increases, the deflection decreases, and so the gradient decrease with increasing current, so its either A or C
When the current is zero, there is a deflection X as stated on the question, so when the current is 0, there must be an intersection at the y axis and so A is the answer.
16
At position 3, the person is not moving (or moving very slowly) , unlike position 2, where he has kinetic energy moving downwards, stretching the rope. Moreover, at 3, the rope stores maximum elastic energy, since its stretched the most. so C
22
Radio waves have frequencies 10^3 to 10^9, i have uploaded previously a document comprising these, and if u cant find it i have no problem uploading it again.
Hope that helped,
