paper 1 hl 2001 - INTERNATIONAL BACCALAUREATE BACCALAURAT...

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PHYSICS HIGHER LEVEL PAPER 1 Monday 19 November 2001 (afternoon) 1 hour N01/430/H(1) INTERNATIONAL BACCALAUREATE BACCALAURÉAT INTERNATIONAL BACHILLERATO INTERNACIONAL 881-170 18 pages INSTRUCTIONS TO CANDIDATES ! Do not open this examination paper until instructed to do so. ! Answer all the questions. ! For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided.
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1. Repeated measurements of a quantity can reduce the effects of A. both random and systematic errors. B. only random errors. C. only systematic errors. D. neither random nor systematic errors. 2. The volume flow rate U of liquid flowing along a tube is measured as a function of the tube radius r . It is suspected that the relationship between U and r may be of power law form, i.e. where and are constants. n U k r k n = If log U is plotted against log r and a straight line results, the value of the power n A. is equal to the gradient of the graph. B. is equal to the inverse of the gradient. C. can be obtained from the intercept on the log U axis. D. can be obtained from the intercept on the log r axis. 3. The dots below show the positions of two moving objects at successive time intervals, with clock readings marked in seconds. 0 1 2 3 0 1 2 3 4 4 5 Nearest to which clock reading will the speeds of the two objects be equal? – 2 – N01/430/H(1) 881-170
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4. Two stones P and Q are thrown from the top of a cliff, one straight up and the other straight down, at the same initial speed. Both eventually hit the ground. P Q If air resistance is negligible, what will be true of the speeds with which the stones hit the ground? A. Stone P hits the ground with the greater speed. B. Stone Q hits the ground with the greater speed. C. Both stones hit the ground with the same speed. D. The comparative speeds of impact depend on the height of the cliff. 5. A car travels along a straight road. It first accelerates from rest, then travels at a constant velocity, then decelerates to a stop. It then remains at rest. Which graph below best represents the displacement s of the car as a function of time t ? s t s t s t A. B. D. s t C. – 3 – N01/430/H(1) 881-170 Turn over
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6. An iron cannon ball is projected horizontally from a cliff and lands on the ground below, a certain distance from the base of the cliff. Air resistance is negligible. If a more massive iron ball were to be projected at the same speed,
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