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12th term = a + (12 - 1)*d = 2 + 11(3) = 35

Sum (9) = 9/2 [2(2) + (9 - 1)*3] = 9/2 [28] = 252/2 = 126

E=1.5MeV = (1.5x10^6)(1.6x10^-19)J = 2.4x10^-13J E=hf, f=E/h = (2.4x10^-13)/(6.63x10^-34)=3.6x10^20Hz

In order to do well in the exam, the first thing is to figure out the AOs, or the Assessment Objectives required in each question of your paper.  Many students make the mistake of not remembering the AOs ...

The alternating current flows through the transmitted coil and produces a magnetic field around the coil. (1 mark) When the detector passes over a magnetic object, the magnetic field passes through the ob...

The human eye has high sensitivity because many rods connect to a singular neurone, so many weak generator potentials combine to reach the threshold and trigger an action potential. The human eye has a hi...