Lecture-1(2018)(1) (1).ppt

A 30x10 1 b 30x10 2 c 40x10 2 d 40x10 1 1x10 3 x 3x10

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A) 3.0x10 -1 B) 3.0x10 -2 C) 4.0x10 -2 D) 4.0x10 -1 (1x10 -3 ) x (3x10 1 ) = (1x3) x (10 -3 x10 1 ) = 3x10 (-3+1) = 3x10 -2 (1x10 -3 ) x (3x10 1 ) = (1x3) x (10 -3 x10 1 ) = 3x10 (-3+1) = 3x10 -2

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Common Prefixes Commonly used prefixes indicating powers of 10 10 3 = “kilo” 10 6 = “mega” 10 9 = “giga” 10 12 = “tera” 10 -3 = “milli” 10 -6 = “micro” 10 -9 = “nano” 10 -12 = “pico” 10 -15 = “femto” 1 km = 10 3 m and there are 10 6 micrometers in a meter , so there are 10 9 (or 1 billion) micrometers in 1 km How many times larger is a kilometer than a micrometer ? A) 1,000 B) 1,000,000 C) 1,000,000,000 D) 1x10 -9 How many 100 W bulbs can be kept lit with 100 Tera-Watts? A) 1.0x10 7 B) 1.0x10 9 C) 1.0x10 12 D)1.0x10 13
Common Conversions Length: 2.54 [cm] = 1 [inch] Mass: 1 [kg] = 2.2 [lbs] Speed: 1 [m/sec] = 2.25 [mi/hr] How many meters are there in a centimeter? A) 100 B) 0.01 C) 1000 D) 0.001 How many inches in 1 kg ? A) 2.54 B) 25.4 C) less than 25 D) None of these How many time has your heart beaten? How many second do you expect to live? How many dentists are there in Kansas City area? How many physicists are there in Kansas City area?
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