Ch1_TestBank - Chapter 1, Introduction CHAPTER 1 1.1...

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Chapter 1, Introduction 1 C HAPTER 1 1.1 Standards of Length, Mass, and Time 1. Since 1983 the standard meter has been defined in terms of which of the following? a. specific alloy bar housed at Sevres, France b. wavelength of light emitted by krypton-86 c. distance from the Earth’s equator to the North Pole d. the distance light travels in a certain fraction of a second 2. Since 1967 the standard definition for the second has been based on which of the following? a. characteristic frequency of the cesium-133 atom b. average solar day c. sidereal day d. Greenwich Civil Time 3. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two? a. length and force b. power and force c. length and time d. force and time 4. The prefixes which are abbreviated p, n, and G represent which of the following? a. 10 -2 , 10 -6 , and 10 15 b. 10 -9 , 10 6 , and 10 10 c. 10 -12 , 10 -9 , and 10 9 d. 10 -15 , 10 -6 , and 10 12 5. The ratio M/m of the prefixes M and m has what value? a. 10 3 b. 10 6 c. 10 9 d. 10 18 6. One year is about ________ seconds while one day is exactly ________ seconds. a. 3.16 × 10 7 , 86 400 b. 5.26 × 10 5 , 86 400 c. 3.16 × 10 7 , 8 640 d. 1.04 × 10 6 , 36 000
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Chapter 1, Introduction 2 1.2 The Building Blocks of Matter 7. The nuclei of atoms contain: a. electrons only. b. neutrons only. c. protons and electrons. d. protons and neutrons. 8. When was the existence of the neutron confirmed? a. in ancient times b. in 1895 c. in 1932 d. in 1969 9. The proton contains which of the following combination of quarks? a. two up quarks and one down quark b. one up quark and two down quarks c. one top quark and two bottom quarks d. two top quarks and one bottom quark 1.3 Dimensional Analysis 10. Which formula is dimensionally consistent with an expression yielding a value for velocity? ( a is acceleration, x is distance, and t is time) a. v /t 2 b. v x 2 c. v 2 /t d. at 11. Which expression is dimensionally consistent with an expression that would yield a value for time - 1 ?( v is velocity, x is distance, and t is time) a. v /x b. v 2 /x c. x/t d. v 2 t
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Chapter 1, Introduction 3 12. If the displacement of an object, x , is related to velocity, v , according to the relation x = A v , the constant, A , has the dimension of which of the following? a. acceleration b. length c. time d. area 13. The speed of a boat is often given in knots. If a speed of 5 knots were expressed in the SI system of units, the units would be: a. m. b. s.
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This note was uploaded on 04/29/2008 for the course PHYS 100A taught by Professor Tahsiri during the Fall '07 term at CSU Long Beach.

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Ch1_TestBank - Chapter 1, Introduction CHAPTER 1 1.1...

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