Physics questions and solutions
Browse original practice and official past-paper questions. Each question has its own link, with its source and worked solution.
498 questions · Page 7 of 21
- Q3 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionIdentify the correct formula for the mass–energy equivalence relationship.
- Q4 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionThe diagram shows two charges, and , separated by a distance, . There is a force, , acting between the two charges.Calculate the magnitude of the force acting between the two charges if is halved and the charge of is doubled.
- Q5 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionMesons are
- Q6 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionElectromagnetic radiation is
- Q7 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionNormal force is the force acting along an imaginary line
- Q8 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionThe diagram shows two displacement vectors.Calculate the resultant vector above the horizontal axis when Vector A is added to Vector B.
- Q9 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionThe Bohr atomic model describes an atom as
- Q10 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionProper length is the length measured in the frame of reference where the object is
- Q11 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionUniform circular motion occurs when an object is travelling in a circle at a constant
- Q12 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionCalculate the maximum height reached by a projectile with an initial velocity of 15 m s–1 at an angle of 30° up from the horizontal.
- Q13 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionCalculate the orbital period of a satellite travelling around the Earth with a radius of 4.00 × 108 m.
- Q14 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionMoving electric charges in a magnetic field experience
- Q15 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionWhich Feynman diagram shows an electron interacting with another electron?
- Q16 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionThe weight of a 5 kg object on Earth is
- Q17 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionElectrical potential energy is the
- Q18 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionA gravitational field is the
- Q19 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionA spaceship with a velocity of 9.0 × 107 m s–1 is measured to be 125 m in length by an observer at rest. Calculate the length of the spaceship as measured by somebody on board the spaceship.
- Q20 · 2021 QCAA · Paper 1 · 1 markQuestion and worked solutionA photoelectron with a kinetic energy of 2.5 × 10–19 J is ejected when a photon with a frequency of 1.3 × 1015 Hz is incident on the metal plate. Calculate the threshold frequency of light required to eject the photoelectron from the metal plate.
- Q21 · 2021 QCAA · Paper 1 · 3 marksQuestion and worked solutionExplain how transformers work in terms of Faraday’s law and electromagnetic induction.
- Q22 · 2021 QCAA · Paper 1 · 3 marksQuestion and worked solutionA planet is orbiting a 3.38 × 1031 kg star. The radius of the orbit is 4.23 × 108 km. Calculate the average speed of the planet.
- Q23 · 2021 QCAA · Paper 1 · 5 marksQuestion and worked solutionThe diagram shows a metal rod with a mass of 10.0 g and a length of 8.0 cm suspended in a uniform magnetic field of 0.50 T. There is no electric current through the metal rod when it is in Position 1.When a current () is passed through the metal rod it moves to Position 2, with an angle of to the vertical.Determine the magnitude of the curr…
- Q24 · 2021 QCAA · Paper 1 · 3 marksQuestion and worked solutionThe diagram shows a 1.5 kg object on an inclined plane with an angle of up from the horizontal. The object experiences a frictional force of 4.5 N.Calculate the magnitude of the net force acting on the object.
- Q25 · 2021 QCAA · Paper 1 · 4 marksQuestion and worked solutionThe graph shows the centripetal forces required to keep objects with different mass in uniform circular motion with a constant speed and constant radius of 20 cm.Determine the speed of the objects.
- Q26 · 2021 QCAA · Paper 1 · 5 marksQuestion and worked solutionA physicist has identified the absorption spectrum of an unknown atom.The diagram shows the atomic energy levels for three atoms.Determine which atom is most likely to be the unknown atom.