<p>Q1) Which one of the following is an SI base unit?</p><p>1) gram 2) newton 3) kilogram 4) slug 5) centimeter</p><p>Q2) Which one of the following pairs of units may not be added together, even after the appropriate unit conversions have been made?</p><p>1) grams and milligrams 2) miles and kilometers 3) kilograms and kilometers 4) slugs and kilograms 5) centimeters and yards</p><p>Q3) To be dimensionally consistent, distance [L], acceleration [L/T2], and time [T] must be related as follows: 1) distance = acceleration2  time2 2) distance = acceleration  time 3) distance = acceleration  time2 4) distance = acceleration2  time 5) none of the above Q4) The equation for the speed of sound in a gas states that v= g kB T/ m . Speed v is in m/s,  is a dimensionless constant, temperature T is in kelvins (K), and mass m is in kg. What are the units of Boltzmann’s constant, kB?</p><p>2 2 1) kgm s K 2 -2 -1 2) kgm s K -1 -2 2 3) kg m s K 4) kgm/s 2 -2 5) kgm s</p><p>Q5) During a short interval of time the speed v in m/s of an automobile is given by v = at2 + bt3, where the time t is in seconds. The units of a and b are respectively:</p><p>1) ms2; ms4 2) s3/m; s4/m 3) m/s2; m/s3 4) m/s3; m/s4 5) m/s4; m/s5</p><p>Q6) If x = ½ at2, with meters the units of x, and seconds the units of t, what are the units of a?</p><p>1) m 2) s2 3) m/s2 4) s2/m 2 5) ms Q7) Which one of the following is the longest length?</p><p>1) 100 meters 2) 104 millimeters 3) 107 nanometers 4) 102 centimeters 5) 105 micrometers</p><p>Q8) A light year is the distance light travels in a year. If the speed of light is c = 3.00  108 m/s, how many meters are there in a light year? Use 365 days/year, 24 hours/day, 60 minutes/hour, 60 seconds/minute and 2.54 cm/inch.</p><p>1) 1.58  1015 2) 3.94  1014 3) 8.24  1014 4) 3.72  1015 5) 9.46  1015 </p><p>Q9) The surface area of a lake has an area of 15.5 km2. What is the area of the lake in m2? 1) 1.55  103 m2 2) 1.55  104 m2 3) 1.55  106 m2 4) 1.55  107 m2 5) 1.55  108 m2 Q10) A sphere with a radius of 1.7 cm has a volume of:</p><p>1) 2.1  105 m3 2) 9.1  104 m3 3) 3.6  103 m3 4) 0.11 m3 5) 21 m3</p><p>Q11) A right circular cylinder with a radius of 2.3 cm and a height of 1.4 m has a volume of: 1) 23 m3 2) 0.23 m3 3) 9.3  10-3 m3 4) 2.3  10-3 m3 5) none of the above </p><p>Q12) Convert 55 mi/hr to m/s.</p><p>1) 123 m/s 2) 0.015 m/s 3) 88 m/s 4) 25 m/s 5) none of the above Q13) By what factor does the volume of a sphere increase if the radius is tripled? 1) 3 2) 6 3) 9 4) 12 5) 27</p><p>Q14) By what factor larger is a 12 inch pizza than a 10 in pizza? 1) 0.69 2) 0.83 3) 1.0 4) 1.2 5) 1.4</p><p>Q15) A beach ball has been partially deflated. If enough air is added to increase its radius by 5%, its volume</p><p>1) decreases by a factor of 0.95. 2) increases by a factor of 1.05. 3) increases by a factor of 1.10. 4) increases by a factor of 1.16. 5) none of the above Q16) Which one of the following answers would give the correct number of significant figures when the following masses are added together: 3.6 kg, 113 kg, and 4.19 kg?</p><p>1) 121 kg 2) 120.79 kg 3 3) 120.8 × 103 kg 4) 120.8 kg 5) 1.20 × 102 kg</p>