Two balls X and Y are moving towards each other with speeds of 5 m s-1 and 15 m s-1 respectively.

Q#20 ( Past Exam Paper – March 2019 Paper 12 Q8 ) Two balls X and Y are moving … Read more Two balls X and Y are moving towards each other with speeds of 5 m s-1 and 15 m s-1 respectively.

(a) Define, for a wire,(i) stress,(ii) strain. (b) A wire of length 1.70 m hangs vertically

Q#11 ( Past Exam Paper – June 2011 Paper 21 Q4 ) (a)  Define, for a wire, (i)… Read more (a) Define, for a wire,(i) stress,(ii) strain. (b) A wire of length 1.70 m hangs vertically

The diagram shows a non-uniform electric field near a positively charged and a negatively charged sphere. Four electrons, A, B, C and D,

Q#25 ( Past Exam Paper – November 2011 Paper 12 Q31 ) The diagram shows a non-u… Read more The diagram shows a non-uniform electric field near a positively charged and a negatively charged sphere. Four electrons, A, B, C and D,

The diagram shows an arrangement to stop trains that are travelling too fast. Trains coming from the left travel at a speed of 50 m s-1.

Q#36 ( Past Exam Paper – June 2013 Paper 12 Q7 ) The diagram shows an arrangeme… Read more The diagram shows an arrangement to stop trains that are travelling too fast. Trains coming from the left travel at a speed of 50 m s-1.

Air is trapped inside a glass bulb which is immersed in water and attached to a U-tube containing mercury.

Q#40 ( Past Exam Paper – November 2017 Paper 12 Q15 ) Air is trapped inside a g… Read more Air is trapped inside a glass bulb which is immersed in water and attached to a U-tube containing mercury.

(a) Give one example of a hadron: a lepton: [1] (b) Describe, in terms of the simple quark model,

Q#19 ( Past Exam Paper – June 2016 Paper 21 Q7 ) (a)  Give one example of a had… Read more (a) Give one example of a hadron: a lepton: [1] (b) Describe, in terms of the simple quark model,

(a) A nuclear reaction occurs when a uranium-235 nucleus absorbs a neutron. The reaction may be represented by the equation:

Q#18 ( Past Exam Paper – June 2012 Paper 22 Q7 ) (a)  A nuclear reaction occurs… Read more (a) A nuclear reaction occurs when a uranium-235 nucleus absorbs a neutron. The reaction may be represented by the equation: