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PHYS 201: Exam 1
hand = ? in
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4 inches
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cubit = ? in
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18 inches
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fathom = ? ft/ ? m
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6 feet/1.8 meters
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mile = ? ft
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5280 feet
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yard = ? in/ ? ft
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36 inches/3 feet
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acre
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how much land one mule can plow in 1 day
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fortnight
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2 weeks
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span = ? in
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9 inches
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1 inch = ? cm
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2.54 cm
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1 meter = ? cm
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100 cm
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1 kg = ? lb
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2.2 lb
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1 ton = ? kg = ? lbs
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1000 kg/2200 lb
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Who invented SI units?
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Napoleon (meter, kg, second)
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Length SI unit is defined by?
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Meter (the distance light travels in a vacuum)
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SI unit of mass is defined by?
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platinum iridium bar in Paris - kilogram
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SI unit of time
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second
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103
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kilo
thousand
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106
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mega
million
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109
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giga
billion
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1012
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tera
trillion
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1015
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peta
quadrillion
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1018
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exa
quintillion
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1021
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zetta
sextillion
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1024
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yotta
septillion
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3-Oct
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milli
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6-Oct
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micro
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9-Oct
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nano
molecular structures
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12-Oct
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pico
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15-Oct
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femto
nuclear reactor level
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18-Oct
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atto
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21-Oct
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zepto
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24-Oct
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yocto
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terminal velocities of human
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140 mph max drag and 240 mph standing
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Normal human male and female masses
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M: 100 kg = 220 lbs
F: 50 kg = 110 lbs
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Name the four forces and their relative strengths
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1. gravitational 10^-39
2. weak 10^-14
3. electrical and magnetic 10^-2
4. strong 1 = 10
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Newton's Laws
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1. if a=0, then f=0
2. f=ma
3. equal and opposite forces
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