College Physics Introduction

College Physics Introduction 0.1 Conceptual Questions 1) In the product A ? B ? C, A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the product have? A) 2 B) 3 C) 4 D) 5 E) 10 Answer: A 2) In the quotient , A has 5 significant figures, B has 2 significant figures, and C has 3 significant figures. How many significant figures does the quotient have? A) 2 B) 3 C) 4 D) 0 E) 1 Answer: A 3) How many significant figures are in the number 0.0037010? A) four B) five C) six D) seven E) eight Answer: B 4) How many significant figures are in the number 0.010? A) four B) three C) two D) one Answer: C 5) How many significant figures are in the number 120.070? A) six B) five C) four D) three Answer: A 6) The number of significant figures in 10001 is A) two. B) three. C) five. D) six. Answer: C Var: 6 7) The number of significant figures in 0.01500 is A) two. B) three. C) four. D) five. Answer: C Var: 5 8) The number of significant figures in 0.040 is A) one. B) two. C) three. D) four. Answer: B Var: 6 9) Which of the following numbers has 4 significant figures; which has 5 significant figures? (a) 3001 (b) 0.00370 (c) 4774.00 (d) 29.290 Answer: (a) has 4 significant figures; (d) has 5 significant figures 10) In a parallel universe, the quantity ? has the value 3.14049… . Express ? in that universe to (a) four significant figures (b) five significant figures. Answer: (a) 3.140 (b) 3.1405 11) A reasonable estimate for the mass of a typical female college student is A) 20 kg. B) 50 kg. C) 150 kg. D) 200 kg. Answer: B 12) A reasonable estimate for the height of an ordinary adult male is A) 50 cm. B) 70 cm. C) 200 cm. D) 300 cm. Answer: C 13) A reasonable estimate for the mass of a typical new-born baby is A) 1 kg. B) 3 kg. C) 10 kg. D) 20 kg. Answer: B 14) A reasonable estimate for the height of the walls in an ordinary American home is A) 10 m. B) 8 m. C) 2.5 m. D) 1.5 m. Answer: C 15) A reasonable estimate for the duration of a typical physics lecture is A) 600 s. B) 1000 s. C) 3500 s. D) 10,000 s. Answer: C 16) A reasonable estimate for the mass of an ordinary passenger car is A) 100 kg B) 1000 kg C) 5000 kg D) 10,000 kg Answer: B 0.2 Problems 1) What is the product of 12.56 and 2.12 expressed to the correct number of significant figures? A) 27 B) 26.6 C) 26.23 D) 26.627 Answer: B Var: 3 2) What is the quotient of 2.43 ÷ 4.561 expressed to the correct number of significant figures?? A) 5.3278 × B) 5.328 × C) 5.33 × D) 5.3 × Answer: C Var: 3 3) What is expressed to the correct number of significant figures? A) 0.91 B) 0.911 C) 0.9108 D) 0.9 Answer: A Var: 50+ 4) The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area of the rectangle should be written as A) 0.68 m2 B) 0.682 m2 C) 0.6818 m2 D) 0.68175 m2 Answer: B 5) The last page of a book is numbered 764. The book is 3.0 cm thick, not including its covers. What is the average thickness (in centimeters) of a page in the book, rounded to the proper number of significant figures? A) 0.0039 cm B) 0.072 cm C) 0.0079 cm D) 0.00393 cm E) 0.00785 cm Answer: C 6) A rectangular garden measures 15 m long and 13.70 m wide. What is the length of a diagonal from one corner of the garden to the other? A) 18 m B) 19 m C) 20 m D) 4.1 × 102 m Answer: C 7) If a circle has a radius of 1.109 m, what is its area expressed to the correct number of significant figures? A) 3.86 m2 B) 3.863 m2 C) 3.864 m2 D) 3.8638 m2 E) 3.86379 m2 Answer: C 8) Using a digital balance the mass of a certain piece of wood is read as 12.946 g. Thinking in terms of accuracy and significant figures, what value would you record on your data sheet if the balance is accurate to one-tenth of a gram? A) 12.9 g B) 12.95 g C) 13 g D) 13.0 g Answer: A 9) Which of the following numbers is the smallest? A) 15 × 10-3 B) 0.15 × 100 C) 0.00015 × 103 D) 0.00000015 × 106 Answer: A 10) Which one of the following numbers is equivalent to the number 0.0001776? A) 1.776 × 10-4 B) 17.76 × 10-3 C) 1776 × 10-5 D) 177.6 × 10-7 Answer: A 11) Write out the number 8.42 × 10-5 in full with a decimal point and correct number of zeros. A) 0.00000842 B) 0.0000842 C) 0.000842 D) 0.00842 Answer: B Var: 5 12) What is the result of the calculation (0.410 + 0.021) × (2.20 × 103)? A) 880 B) 946 C) 948 D) 950 Answer: C 13) Express (2.2 × 106)-1/2 in scientific notation. A) 6.7 × 10-4 B) 1.5 × 103 C) 1.5 × 10-5 D) 1.5 × 104 Answer: A Var: 40 14) Express the number 13.5 gigameters in meters without using scientific notation. A) 135,000 m B) 135,000,000 m C) 135,000,000,000 m D) 13,500,000,000 m Answer: D 15) A volume of 100 mL is equivalent to which one of the following volumes? A) 1 kL B) 10-6 ?L C) 0.1 L D) 0.01 ML Answer: C 16) The volume of a 10-mL test tube is equivalent to which one of the following quantities? A) 0.01 L B) 0.001 kL C) 0.1 L D) 1 × 10-6 L E) 0.001 ML Answer: A 17) The number 0.00325 × 10-8 cm can be expressed in millimeters as A) 3.25 × 10-12 mm. B) 3.25 × 10-11 mm. C) 3.25 × 10-10 mm. D) 3.25 × 10-9 mm. Answer: C 18) The prefix yotta (Y) signifies a multiple of 1024. How many yottameters are there in a gigameter? Answer: 10-15 ym 19) The quantity 0.00325 × 10-8 cm is equivalent to A) 3.25 × 10-12 mm B) 3.25 × 10-11 mm C) 3.25 × 10-10 mm D) 3.25 × 10-9 mm E) 3.25 × 10-8 mm Answer: C 20) A weight lifter can bench press How many milligrams is this? A) 1.71 × 108 mg B) 1.71 × 109 mg C) 1.71 × 107 mg D) 1.71 × 106 mg Answer: A Var: 50+ 21) How many nanoseconds does it take for a computer to perform one calculation if it performs calculations per second? A) 15 ns B) 67 ns C) 11 ns D) 65 ns Answer: A Var: 50+ 22) A certain disk can store 600 megabytes of information. If an average word requires 9.0 bytes of storage, how many words can be stored on one disk? A) 6.7 × 107 words B) 5.4 × 109 words C) 2.1 × 107 words D) 2.0 × 109 words Answer: A Var: 9 23) The wavelength of the light from a certain laser is where What is this wavelength in nanometers? (1 nm = 10-9m) A) 6.6 × 102 nm B) 6.6 × 103 nm C) 6.6 × 101 nm D) 6.6 × 104 nm Answer: A Var: 50+ 24) The mass of Mars, 6.40 × 1023 kg, is about one-tenth that of Earth, and its radius, 3395 km, is about half that of Earth. What is the mean density (mass divided by volume) of Mars in kilograms per cubic meter? A) 9.76 × 102 kg/m3 B) 1.95 × 103 kg/m3 C) 3.90 × 103 kg/m3 D) 7.81 × 103 kg/m3 Answer: C 25) Estimate how many pennies would you have to stack to reach from the floor to an average 8-ft ceiling. A) 2 × 103 B) 2 × 102 C) 2 × 104 D) 2 × 105 E) 2 x 106 Answer: A 26) Estimate the number of times the earth will rotate on its axis during a human's lifetime. A) 3 × 104 B) 3 × 105 C) 3 × 106 D) 3 × 107 E) 3 × 108 Answer: A 27) Estimate the thickness, in meters, of an ordinary sheet of paper. A) 10-4 m B) 10-5 m C) 10-6 m D) 10-7 m E) 10-8 m Answer: A 28) Which of the following is the most reasonable estimate of the number of characters (typed letters or numbers) in a 609-page book? Assume an average of 194 words per page and a reasonable average number of letters per word. A) 5 × 105 char B) 5 × 107 char C) 5 × 106 char D) 5 × 104 char Answer: A Var: 50+ 29) A marathon race is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride. A) 4.5 × 104 strides B) 4.5 × 103 strides C) 4.5 × 105 strides D) 4.5 × 106 strides Answer: A 30) Estimate the number of times an average person's heart beats in a lifetime. Assume the average heart rate is 69 beats/min and a life span of 75 years. A) 3 × 109 beats B) 3 × 108 beats C) 3 × 1010 beats D) 3 × 107 beats Answer: A Var: 50+