view_agenda
Questions
Find the perfect question by filtering through every previous QCAA Physics external exam question
notifications
Question Classifications
We’re conducting a final review of the classifications and formatting for our recently onboarded questions. If you have any feedback, please share it with us here.
QUESTION 12 Which of the following is one of Keplers laws of planetary motion? (A) (B) ©) (D) The laws of physics are the same in all inertial frames of reference. All planets move about the Sun in elliptical orbits having the Sun as one of the foci. The speed of light in a vacuum has the same value c in all inertial frames of reference. The force of attraction between each pair of point particles is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
QUESTION 15 Calculate the orbital period of a satellite travelling on a 3.00 X 10® m radius orbit around the Earth. (A) 1.44 x 102 hours (B) 4.54 x 10? hours (C) 1.64 x 10° hours (D) 7.44 x 10% hours
QUESTION 25 (3 marks) Mars has an average orbital radius of approximately 1.5 times the average orbital radius of Earth. Calculate the time it takes Mars to orbit the Sun. days (to the nearest whole number)
QUESTION 9 (5 marks) Nine planets orbit the same star. The orbital radius and orbital period of each planet was measured. The graph shows the cube of the orbital radius of each planet compared to its orbital period squared T 2 18 ek AN Orbital radius cubed 7* (10°? m?) 0 10 000 20 000 30 000 40 000 50 000 60 000 70 000 Orbital period squared 72 (days?) Determine the mass of the star. Show your working. kg (to 1 decimal place)
QUESTION 13 Calculate the orbital period of a satellite travelling around the Earth with a radius of 4.00 X 10% m. (A) 3.49 x 1072 hours (B) 3.94 x 10% hours (C) 6.99 x 10% hours (D) 1.76 x 10° hours
QUESTION 4 An object orbiting Earth has an orbital period of 5.6 x 10° s. What is the objects orbital radius? (A) 3.8x10°m (B) 6.8x10°m (C) 1.8%x10%m (D) 1.3x10%m
QUESTION 19 . 2 . . Select the two formulas that along with v = g can be used to derive Keplers third law of planetary motion. F (A) Fgmgandg; (B) F = GMm 2 <) a.= UT and F o = e GMm mu? (D) F= rand Foet =
QUESTION 4 Kepler’s third law (A) describes the elliptical orbit of planets. (B) combines Newton’s first law of motion with uniform circular motion. (C) equates the area of the arc sweep of a planet to the time taken to complete it. (D) describes the relationship between uniform circular motion and the Law of Universal Gravitation.
No results found
open_with
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_1.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_2.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_3.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_4.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_5.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_6.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_7.webp)
![Formula-Book-Image](https://examinsightsimages.syd1.cdn.digitaloceanspaces.com/Physics/Physics_Formula_Sheet_8.webp)