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Wednesday 18 November 2015
Comments on November Grade 10 (P1)
Any comments on the above-mentioned paper or clarity on the memorandum? The memo for this paper is available here. Memo corrections and additions See comments below.
CORRECTION - Q9.3.3: Answer should be "D to C" because D is the north pole of the magnet.
MOTIVATION: If the north pole of the compass points away from D, the south pole of the compass is attracted by the north pole of the magnet; hence, D must be a north pole.
CORRECTION - Q9.3.3:
ReplyDeleteAnswer should be "D to C" because D is the north pole of the magnet.
MOTIVATION: If the north pole of the compass points away from D, the south pole of the compass is attracted by the north pole of the magnet; hence, D must be a north pole.
Q5.3: I got an enquiry about the following solution (I cannot type exponents here) and I suggest the following mark allocation:
ReplyDeletemech energy (A) = mech energy (D
= U (D) + K (D)
= mgh + 1/2mv2
250 = (5)(9,8)(7) + 1/2(5)v2 (Mark here)
-93 = v2
Because v is undefined, (Two marks for statement)
it impossible for the ball to reach D. (Mark)