Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
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12. Certain types of radio waves are used for communicating with spacecraft. Radio<br />
signals may be modified through amplitude modulation (AM) or through frequency<br />
modulation (FM). Which of the following diagrams represents a radio signal with a<br />
changing frequency<br />
A.<br />
B.<br />
C.<br />
D.<br />
Numerical Response<br />
2. Mars has a mass of 6.42 × 10 23 kg. When a probe orbiting Mars is 3.52 × 10 6 m<br />
from the centre of the planet, the gravitational field strength of Mars acting upon the<br />
probe is _________N/kg.<br />
(Record your answer to three digits in the numerical-response section on the answer sheet.)<br />
6
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