50 marks – 1 hour and a half
Questions.
Question 1.
a) A charged plate has a 4 V potential difference with a spacing of 15 cm, if an electron is released midway between the plates, what is the maximum acceleration of the electron. [4 marks]
b) How would this differ if the electron was replaced by a proton. [4 marks]
Question 2.
Explain the connection between the quantization of light and the resolution of the UV-catastrophe for black bodies. [6 marks]
Question 3.
- Outline a thought experiment that relates to the prediction of space dilation. [3 marks]
- Outline experimental evidence that validated the prediction of space dilation. [3 marks]
Question 4.
A particle having mass m and charge q is accelerated from an initial velocity u parallel to a potential difference V. Assume that the only force acting on the particle is due to the electric field associated with this potential difference. [5 marks]
Question 5.
Describe how specific experiments have contributed to our understanding of the positron and ONE other fundamental particle. [5 marks]
Question 6.
Describe three pieces of information you can derive from the spectra of a star [5 marks]
Question 7.
With reference to the standard model, evaluate the use of models in science [6 marks]
Question 8.
Evaluate Kepler’s law’s contribution to our understanding of motion. [ 4 marks]
Question 9.
- Two cars of the same mass on a planet other then earth take a corner of radius 150 m and an angle of 10 degrees going 45 km/h. What is the maximum speed they could go when taking another corner of angle 15 degrees and a radius of 92 m. [3 marks]
- Why do banked curves are used in car turning corners [2 marks]
Answers.
Available to be emailed to you, here
