Physics Past Hsc Q's

Topics: Electron, Magnetic field, Magnetism, Magnetic resonance imaging, Rocket, Mathematics / Pages: 5 (1033 words) / Published: Aug 18th, 2013
2010 HIGHER SCHOOL CERTIFIC ATE EXAMINATION

Physics
Centre Number

Section I (continued)
Part B – 55 marks Attempt Questions 21–32 Allow about 1 hour and 40 minutes for this part Student Number

Answer the questions in the spaces provided. These spaces provide guidance for the expected length of response. Show all relevant working in questions involving calculations.

Question 21 (2 marks) The optimum angle for safe re-entry of a space vehicle into Earth’s atmosphere is angle B. Outline consequences of the space vehicle entering the atmosphere at angle A AND angle C.
Space vehicle

2

A Atmosphere Earth NOT TO SCALE

B

C

......................................................................................................................................... ......................................................................................................................................... ......................................................................................................................................... .........................................................................................................................................

3431

– 13 –

Question 22 (5 marks) An astronaut on the Moon throws a stone from the top of a cliff. The stone hits the ground below 21.0 seconds later. The acceleration due to gravity on the moon is 1.6 ms–2.

150 m

300 m (a) Calculate the horizontal component of the stone’s initial velocity. Show your working. ............................................................................................................................... ............................................................................................................................... (b) Calculate the vertical component of the stone’s initial velocity. Show your working.

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