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0.2 Conversion factors

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Length
m cm km
1 meter 1 10 2 10 −3
1 centimeter 10 −2 1 10 −5
1 kilometer 10 3 10 5 1
1 inch 2.540 × 10 −2 2.540 2.540 × 10 −5
1 foot 0.3048 30.48 3.048 × 10 −4
1 mile 1609 1.609 × 10 4 1.609
1 angstrom 10 −10
1 fermi 10 −15
1 light-year 9.460 × 10 12
in. ft mi
1 meter 39.37 3.281 6.214 × 10 −4
1 centimeter 0.3937 3.281 × 10 −2 6.214 × 10 −6
1 kilometer 3.937 × 10 4 3.281 × 10 3 0.6214
1 inch 1 8.333 × 10 −2 1.578 × 10 −5
1 foot 12 1 1.894 × 10 −4
1 mile 6.336 × 10 4 5280 1

Area

1 cm 2 = 0.155 in. 2

1 m 2 = 10 4 cm 2 = 10.76 ft 2

1 in. 2 = 6.452 cm 2

1 ft 2 = 144 in. 2 = 0.0929 m 2

Volume

1 liter = 1000 cm 3 = 10 −3 m 3 = 0.03531 ft 3 = 61.02 in. 3

1 ft 3 = 0.02832 m 3 = 28.32 liters = 7.477 gallons

1 gallon = 3.788 liters

Time
s min h day yr
1 second 1 1.667 × 10 −2 2.778 × 10 −4 1.157 × 10 −5 3.169 × 10 −8
1 minute 60 1 1.667 × 10 −2 6.944 × 10 −4 1.901 × 10 −6
1 hour 3600 60 1 4.167 × 10 −2 1.141 × 10 −4
1 day 8.640 × 10 4 1440 24 1 2.738 × 10 −3
1 year 3.156 × 10 7 5.259 × 10 5 8.766 × 10 3 365.25 1
Speed
m/s cm/s ft/s mi/h
1 meter/second 1 10 2 3.281 2.237
1 centimeter/second 10 −2 1 3.281 × 10 −2 2.237 × 10 −2
1 foot/second 0.3048 30.48 1 0.6818
1 mile/hour 0.4470 44.70 1.467 1

Acceleration

1 m/s 2 = 100 cm/s 2 = 3.281 ft/s 2

1 cm/s 2 = 0.01 m/s 2 = 0.03281 ft/s 2

1 ft/s 2 = 0.3048 m/s 2 = 30.48 cm/s 2

1 mi/h · s = 1.467 ft/s 2

Mass
kg g slug u
1 kilogram 1 10 3 6.852 × 10 −2 6.024 × 10 26
1 gram 10 −3 1 6.852 × 10 −5 6.024 × 10 23
1 slug 14.59 1.459 × 10 4 1 8.789 × 10 27
1 atomic mass unit 1.661 × 10 −27 1.661 × 10 −24 1.138 × 10 −28 1
1 metric ton 1000
Force
N dyne lb
1 newton 1 10 5 0.2248
1 dyne 10 −5 1 2.248 × 10 −6
1 pound 4.448 4.448 × 10 5 1
Pressure
Pa dyne/cm 2 atm cmHg lb/in. 2
*Where the acceleration due to gravity is 9.80665 m/s 2 and the temperature is 0 ° C
1 pascal 1 10 9.869 × 10 −6 7.501 × 10 −4 1.450 × 10 −4
1 dyne/centimeter 2 10 −1 1 9.869 × 10 −7 7.501 × 10 −5 1.450 × 10 −5
1 atmosphere 1.013 × 10 5 1.013 × 10 6 1 76 14.70
1 centimeter mercury* 1.333 × 10 3 1.333 × 10 4 1.316 × 10 −2 1 0.1934
1 pound/inch 2 6.895 × 10 3 6.895 × 10 4 6.805 × 10 −2 5.171 1
1 bar 10 5
1 torr 1 (mmHg)
Work, energy, heat
J erg ft.lb
1 joule 1 10 7 0.7376
1 erg 10 −7 1 7.376 × 10 −8
1 foot-pound 1.356 1.356 × 10 7 1
1 electron-volt 1.602 × 10 −19 1.602 × 10 -12 1.182 × 10 −19
1 calorie 4.186 4.186 × 10 7 3.088
1 British thermal unit 1.055 × 10 3 1.055 × 10 10 7.779 × 10 2
1 kilowatt-hour 3.600 × 10 6
eV cal Btu
1 joule 6.242 × 10 18 0.2389 9.481 × 10 −4
1 erg 6.242 × 10 11 2.389 × 10 −8 9.481 × 10 −11
1 foot-pound 8.464 × 10 18 0.3239 1.285 × 10 −3
1 electron-volt 1 3.827 × 10 −20 1.519 × 10 −22
1 calorie 2.613 × 10 19 1 3.968 × 10 −3
1 British thermal unit 6.585 × 10 21 2.520 × 10 2 1

Power

1 W = 1 J/s

1 hp = 746 W = 550 ft · lb/s

1 Btu/h = 0.293 W

Angle

1 rad = 57.30 ° = 180 ° / π

1 ° = 0.01745 rad = π / 180 rad

1 revolution = 360 ° = 2 π rad

1 rev/min ( rpm ) = 0.1047 rad/s

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, University physics volume 3. OpenStax CNX. Nov 04, 2016 Download for free at http://cnx.org/content/col12067/1.4
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