Page 05 5. A planet orbits a star at a distance of 3·0 × 109 m. The star exerts a gravitational force of 1·6 × 1027 N on the planet. The mass of the star is 6·0 × 1030 kg. The mass of the planet is A 2·4 × 1014 kg B 1·2 × 1016 kg C 3·6 × 1025 kg D 1·6 × 1026 kg E 2·4 × 1037 kg. 6. A car horn emits a sound with a constant frequency of 405 Hz. The car is travelling away from a student at 28·0 m s−1. The speed of sound in air is 335 m s−1. The frequency of the sound from the horn heard by the student is A 371 Hz B 374 Hz C 405 Hz D 439 Hz E 442 Hz. [Turn over
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Exam Specification Info
This question is part of the UK A-Level Physics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
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