Test bank for physics for scientists and engineers 1st edition by hawkes

Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file CHAPTER at https://TestbankDirect.eu/ 1—INTRODUCTION TO PHYSICS MULTIPLE CHOICE Which of the following can be said to represent an area of physics research? a philosophy b social behaviour c evolution of universe d literature ANS: C BLM: Remember PTS: REF: Page OBJ: Which of these statements is an accurate qualification of physics? a Physics deals with questions of philosophy b Physics interacts heavily with other disciplines, such as chemistry and biology c Physics is concerned only with quantitative analyses d The domain of physics goes beyond the physical universe ANS: B BLM: Remember PTS: REF: Page OBJ: How can true errors in measurements be identified? a by calculating standard deviation of measurements b by calculating standard error of measurements c by reducing the measurement time d by taking more measurements ANS: D BLM: Remember PTS: REF: Page OBJ: A student makes multiple measurements of the time it takes a ball to travel through a curved pipe All his measurements fall between 4.52 and 4.53 seconds Which of the following is the correct statement about the accuracy of the measurements? a The accuracy of the measurements is good b The accuracy of the measurements is poor c Since true value is not known, nothing can be said about the accuracy of the measurements d The accuracy of the measurements is increasing with time ANS: C PTS: BLM: Higher Order REF: Page OBJ: A set of measurements shows a large standard deviation What does that imply? a that individual measurements NOT cluster around their mean b that individual measurements cluster around their mean c that 99.7% of measurements fall within one standard deviation d that 99.7% of measurements fall outside one standard deviation ANS: A PTS: BLM: Higher Order Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page OBJ: 1-1 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e Table 1-1 An experimenter makes multiple measurements of oil flow rate through a hydraulic pipe in order to establish relationship between the hydraulic pump and the flow rate The results of this experiment are listed in Table 1-1 Table 1-1 Measurement Flow Rate (cm3/s) 833 809 746 801 786 Which of these values is the standard error of the mean closest to? Use measured values as given in Table 1-1 to determine your answer a 1.44 b 14.4 c 32.2 d 36.5 ANS: B PTS: BLM: Higher Order REF: Page OBJ: What measure of uncertainty does the standard deviation of the mean correspond to? a a single value b all measurements c the standard deviation d the mean ANS: D BLM: Remember PTS: REF: Page OBJ: Repeated measurements of a parameter during an experiment revealed an SDOM of 1.4 and a standard deviation of 12.3 Which of these values is closest to the number of data points used to calculate these numbers? a b 77 c 90 d 114 ANS: B PTS: BLM: Higher Order REF: Page OBJ: How many significant figures are in the measurement 29.034 50? a b c d ANS: D PTS: BLM: Higher Order Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page OBJ: 1-2 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e 10 In a lab report, the uncertainty in a measured value is NOT explicitly stated in the form of ± notation What does that mean for the uncertainty in the data? a There is no uncertainty in the measurement b The uncertainty is too large to be stated c The significant figures should be assumed to represent uncertainty d The largest digit in the value represents uncertainty ANS: C BLM: Remember PTS: REF: Page OBJ: 11 Which is the correct way of writing 0.000 138 in scientific notation? a 1.386 × 10–4 b 1.386 × 10–5 c 1.386 × 10-6 d 1.386 × 10–7 ANS: A PTS: BLM: Higher Order REF: Page OBJ: 12 In vacuum, light travels at a speed of approximately 299 000 000 metres per second How is this written in scientific notation? a 2.99 × 10–8 m·s–1 b 2.99 × 10–5 m·s–1 c 2.99 × 104 m·s–1 d 2.99 × 108 m·s–1 ANS: D PTS: BLM: Higher Order REF: Page OBJ: 13 A student measures the temperature of a liquid using a digital thermometer and gets a value of 40.3°C He knows that the actual value should be 39.72°C He calculates the difference between the actual and measured values and finds it to be 0.58°C How should he state this difference in the lab report? a 0.58°C b 5.8 × 10–1°C c 0.580°C d 0.6°C ANS: D PTS: BLM: Higher Order REF: Page OBJ: 14 What should the correct number of significant figures in the answer to the calculation 14.85 × 2.1694 be? a b c d ANS: B PTS: BLM: Higher Order Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page OBJ: 1-3 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e 15 According to the rules for significant digits, how should the answer for the calculation be written? a 72.1 b 72.11 c 72.112 d 72.1121 ANS: A PTS: BLM: Higher Order REF: Page 16 How should the answer of the calculation a 4.8 × 105 b 4.9 × 105 c 4.87 × 105 d 4.874 × 105 ANS: C PTS: BLM: Higher Order OBJ: be written in scientific notation? REF: Page OBJ: 17 An experiment is performed to determine the relationship between pressure and temperature of a gas in a cylinder at constant volume Both quantities are measured with respective gauges during the experiment The temperature is then drawn against pressure on a graph paper Which statement is accurate about the error bars of this graph? a Since both quantities are measured with gauges, there are no uncertainties and therefore no error bars are needed b The graph should show both horizontal and vertical error bars c Only vertical error bars should be drawn on the graph paper d Only horizontal error bars should be drawn on the graph paper ANS: B PTS: BLM: Higher Order REF: Page OBJ: 18 Candela is a unit of measurement for which quantity? a distance travelled by light in a year b electric current c amount of substance d light output of a source ANS: D BLM: Remember PTS: REF: Page OBJ: 19 How many molecules does a mole of carbon dioxide gas contain at standard temperature and pressure? a 6.022 b 6.022 × 1023 c 6.022 × 1025 d The given information is insufficient to yield an answer ANS: B BLM: Remember PTS: Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page OBJ: 1-4 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e 20 A particle with mass m and velocity v enters a magnetic field and starts moving in a curve of radius r Which is the correct formula for force experienced by the particle? Use dimensional analysis to determine the answer a b c d ANS: B PTS: BLM: Higher Order REF: Page 11 OBJ: 21 The surface area of a circular disk is cm2 What is its area in m2? a 0.0005 m2 b 0.005 m2 c 0.025 m2 d 0.05 m2 ANS: A PTS: BLM: Higher Order REF: Page OBJ: 10 22 Which is the correct SI unit symbol for luminous flux per unit area? a Lx b lux c lx d lm ANS: C BLM: Remember PTS: REF: Page 10 OBJ: 23 What are the SI units for CV where C stands for electric charge and V for electric potential difference? a J b F c N d Wb ANS: A PTS: BLM: Higher Order REF: Page 10 OBJ: 24 Which of the following is NOT a base SI unit? a m b W c kg d s ANS: B OBJ: PTS: BLM: Remember Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Pages | Page 10 1-5 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e 25 Newton’s second law can be written as F = m a, where F is the force, m is the mass, and a is the acceleration Which are the base SI units of force as determined from dimensional analysis of this equation? a g·m·s–2 b kg·m·s–1 c kg·m·s–2 d g·m·s–1 ANS: C PTS: BLM: Higher Order REF: Page 11 OBJ: 26 A force of 1.27 × 106·cm·s–2 is acting on a body What is the value of this force in SI units? a 1.27 N b 12.7 N c 127 N d 1270 N ANS: B PTS: BLM: Higher Order REF: Page 11 OBJ: 10 27 The gravitational force between two masses m1 and m2 is given by F = G m1 m2 /r2, where r is the centre-to-centre distance between the two masses and G is the universal gravitational constant What are the correct SI units for G as deduced from dimensional analysis of this equation? a N·m2·kg2 b N·m3·kg–2 c N·m–2·kg2 d N·m2·kg–2 ANS: D PTS: BLM: Higher Order REF: Page 11 OBJ: 28 Which of the following statements most accurately qualifies the Fermi problem? a One must know all relevant information precisely to deduce the answer b One must make reasonable assumptions about the parameters needed to solve the problem c One cannot possibly come up with a reasonable answer d The error in the answer is always too large to ignore ANS: B BLM: Remember PTS: REF: Page 12 OBJ: 11 29 Two identical coins are tossed in air at the same time What is the probability of getting a head with both coins? a 0.1 b 0.25 c 0.5 d 0.75 ANS: B PTS: BLM: Higher Order Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page 13 OBJ: 11 1-6 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e 30 Which of the following is NOT required for Professional Physicist certification from the Canadian Association of Physicists (CAP)? a agree to code of ethical conduct b pass a professional examination c agree to volunteer for CAP for two years d complete minimum experience requirements ANS: C BLM: Remember PTS: REF: Page 15 OBJ: 12 TRUE/FALSE The corrections to gravitational effects calculated from Einstein’s general theory of relativity are fundamental to today’s Global Positioning System (GPS) ANS: T BLM: Remember PTS: REF: Page OBJ: With regard to analyzing experimental results, there is no difference between precision and accuracy ANS: F BLM: Remember PTS: REF: Page OBJ: It is possible to completely remove random errors from measurements through better design of experimental techniques and apparatus ANS: F BLM: Remember PTS: REF: Page OBJ: Through better experimental design, systematic errors in measurements can be decreased ANS: T BLM: Remember PTS: REF: Page OBJ: Standard deviation of the mean, or SDOM, is always added to the mean to calculate the true value ANS: F BLM: Remember PTS: REF: Page OBJ: A zero appearing at the end of a number cannot be a significant digit ANS: F BLM: Remember PTS: REF: Page OBJ: A zero followed by a decimal point is always significant ANS: T BLM: Remember PTS: Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page OBJ: 1-7 Test Bank for Physics for Scientists and Engineers 1st Edition by Hawkes Full file at https://TestbankDirect.eu/ Chapter Test Bank Hawkes 1e The measurement 290.650 has five significant figures ANS: F PTS: BLM: Higher Order REF: Page OBJ: Error bars are always determined from standard error of measurement ANS: F BLM: Remember PTS: REF: Page OBJ: 10 In any calculation, the number of significant figures of the answer cannot be higher than the number of significant figures of the least precise quantity in the calculation ANS: T BLM: Remember PTS: REF: Page OBJ: 11 Error bars are NOT always symmetric about the data points ANS: T BLM: Remember PTS: REF: Page OBJ: 12 Candela is the base SI unit for electric current ANS: F BLM: Remember PTS: REF: Page OBJ: 13 Weber is a derived SI unit for magnetic flux ANS: T BLM: Remember PTS: REF: Page 10 OBJ: 14 Solving a Fermi problem requires making estimates of parameters associated with the problem ANS: T BLM: Remember PTS: REF: Page 12 OBJ: 11 15 The numerical value of probability always remains between and 10 ANS: F BLM: Remember PTS: Copyright © 2014 Nelson Education Ltd Full file at https://TestbankDirect.eu/ REF: Page 13 OBJ: 11 1-8