# Physics Paper

Topics: Energy, Magnetic field, Photon Pages: 30 (6502 words) Published: October 5, 2012
CGHS Physics Trial HSC Examination 2008

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Student number ……………………….. Teacher ……………………………………..

Cheltenham Girls High School

2008
Higher School Certificate Trial examination

Physics
TASK WEIGHTING: 35% General Instructions • Reading time – 5 minutes • Working time – 3 hours • Write using black or blue pen • Draw diagrams using pencil • Board-approved calculators may be used • A data-sheet, formulae sheets and Periodic Table are provided at the back of this paper Total marks – 100 Section I Pages 2 – 19 75 marks This section has two parts, Part A and Part B Part A – 15 marks • Attempt Questions 1 – 15 • Allow about 30 minutes for this part Part B – 60 marks • Attempt questions 16 – 27 • Allow about 1 hour and 45 minutes for this part

Section II Pages 20 – 23 25 marks • Attempt ONE question i.e. Question 28 • Allow about 45 minutes for this section

CGHS Physics Trial HSC Examination 2008

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Section I - 60 marks Part A Multiple Choice questions

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15 marks

Attempt all questions 1 to 15. Allow about 30 minutes to complete this Part. Select the alternative A, B, C or D, that best answers the question and indicate your choice by clearly marking your answer in the appropriate place on the Multiple Choice Answer Sheet provided.

Section I
75 marks Part A – 15 marks Attempt Questions 1–15 Allow about 30 minutes for this part Use the multiple-choice answer sheet for Questions 1–15. 1 When the Apollo Moon Missions returned to Earth, the capsules re-entered the atmosphere at angles between 5.5° and 7.5°. Why was re-entry angle greater than 7.5° considered dangerous? A B C D 2 The capsule might have ‘bounced off’ the atmosphere. The deceleration caused by atmospheric drag would have been too small. The deceleration caused by atmospheric drag would have been too great. The acceleration due to gravity would have increased too quickly.

A car drives horizontally off the edge of a 30 m high cliff. What can we predict about the car’s motion during its fall? A B C D The acceleration will increase. The total energy of the car will increase. The vertical component of the velocity of the car will increase. The horizontal component of the velocity will increase.

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If the space shuttle moved a satellite to a higher orbit, how would the energy of the satellite in the higher orbit compare to the energy of the satellite in the lower orbit? A B C D Both the kinetic energy and potential energy would be less. The kinetic energy would greater, but the potential energy would be less. Both the kinetic energy and potential energy would be greater. The potential energy would be greater, but the kinetic energy would be less.

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Planet A has the same mass as planet B. If the acceleration due to gravity on the surface of planet A is nine times greater than the acceleration due to gravity on the surface of planet B, what is the ratio of the radii of planet A to planet B? A B C D 3:1 1:3 9:1 1:9

CGHS Physics Trial HSC Examination 2008

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What can be inferred about a frame of reference if Newton’s first law is obeyed in the frame? A B C D The frame must be in a gravitational field. The frame must be an inertial frame. Einstein’s special theory of relativity could not be applied to the frame. The frame must be a non-inertial frame.

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The motor/generators in the latest electric cars have a dual role. They use electrical energy to power the car and they use the kinetic energy of the car to generate electricity when the car decelerates. Which of the following principles enables the motor to carry out both roles? A B C D Potential energy can always be converted into kinetic energy. Induction motors have no commutator. Superconductors can be used to make very intense magnetic fields. The structure of a DC motor and generator are identical.

CGHS Physics Trial HSC Examination 2008

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A student sets up an experiment in which a bar magnet attached to a simple pendulum...