Ok i need help for once (1 Viewer)

[JayWalker]

I need help.. i cant remember how to convert units.. suhc as converting nm [wavelength] to meters, i cant remember what everything is measure in..
Like length is in meters or cm or km???
Time in seconds, hours, days.. argh

Any help would be kewl.

Anyone done Barker college 2004 Trial?? I need help on question 27...
something about wavelength is 440nm, the electron ejected has energy of 250 x 10^-19 J..

Whats the energy of the incident photons, isnt that the electrons?!?!

 

[gordo]

length in metres (a nanometre is 1 x 10^-9 metres)
time in seconds
mass in kilograms

is that it?

 

[JayWalker]

length in metres (a nanometre is 1 x 10^-9 metres)
time in seconds
mass in kilograms

is that it?

so how many meters is 440 nanometers?!?

 

[einsteinthe2nd]

nano = billionth of a metre

So 440 * billionth of a metre


Nano measured in x 10^-9

4.4 x 10^-7????

The SI UNITS are Metres, Seconds, Kilograms, Joules, Newtons.....I'm pretty sure......

 

[BillyMak]

440*10^-9

 

[JayWalker]

Lol right so im still confused... Hey einstein, gj on whatpulse

 

[BillyMak]

metres....

 

[Jase]

<tr>
<td><a href="/wiki/1_E24" title="1 E24">10²⁴</a></td>
<td><a href="/wiki/Yotta" title="Yotta">yotta</a></td>
<td>Y</td>
<td><a href="/wiki/Septillion" title="Septillion">Septillion</a></td>
<td><a href="/wiki/Quadrillion" title="Quadrillion">Quadrillion</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E21" title="1 E21">10²¹</a></td>
<td><a href="/wiki/Zetta" title="Zetta">zetta</a></td>
<td>Z</td>
<td><a href="/wiki/Sextillion" title="Sextillion">Sextillion</a></td>
<td>Thousand trillion (Trilliard)</td>
</tr>
<tr>
<td><a href="/wiki/1_E18" title="1 E18">10¹⁸</a></td>
<td><a href="/wiki/Exa" title="Exa">exa</a></td>
<td>E</td>
<td><a href="/wiki/Quintillion" title="Quintillion">Quintillion</a></td>
<td><a href="/wiki/Trillion" title="Trillion">Trillion</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E15" title="1 E15">10¹⁵</a></td>
<td><a href="/wiki/Peta" title="Peta">peta</a></td>
<td>P</td>
<td><a href="/wiki/Quadrillion" title="Quadrillion">Quadrillion</a></td>
<td>Thousand billion (<a href="/wiki/Billiard" title="Billiard">Billiard</a>)</td>
</tr>
<tr>
<td><a href="/wiki/1_E12" title="1 E12">10¹²</a></td>
<td><a href="/wiki/Tera" title="Tera">tera</a></td>
<td>T</td>
<td><a href="/wiki/Trillion" title="Trillion">Trillion</a></td>
<td><a href="/wiki/Billion" title="Billion">Billion</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E9" title="1 E9">10⁹</a></td>
<td><a href="/wiki/Giga" title="Giga">giga</a></td>
<td>G</td>
<td><a href="/wiki/Billion" title="Billion">Billion</a></td>
<td>Thousand million (<a href="/wiki/Milliard" title="Milliard">Milliard</a>)</td>
</tr>
<tr>
<td><a href="/wiki/1_E6" title="1 E6">10⁶</a></td>
<td><a href="/wiki/Mega" title="Mega">mega</a></td>
<td>M</td>
<td colspan="2"><a href="/wiki/Million" title="Million">Million</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E4" title="1 E4">10⁴</a> (obsolete)</td>
<td><a href="/wiki/Myria" title="Myria">myria</a></td>
<td>ma</td>
<td colspan="2"><a href="/wiki/Ten_thousand" title="Ten thousand">Ten thousand</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E3" title="1 E3">10³</a></td>
<td><a href="/wiki/Kilo" title="Kilo">kilo</a></td>
<td>k</td>
<td colspan="2"><a href="/wiki/One_thousand" title="One thousand">Thousand</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E2" title="1 E2">10²</a></td>
<td><a href="/wiki/Hecto" title="Hecto">hecto</a></td>
<td>h</td>
<td colspan="2"><a href="/wiki/Hundred" title="Hundred">Hundred</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E1" title="1 E1">10¹</a></td>
<td><a href="/wiki/Deca" title="Deca">deca</a></td>
<td>da</td>
<td colspan="2"><a href="/wiki/Ten" title="Ten">Ten</a></td>
</tr>
<tr>
<td><a href="/wiki/1_E-1" title="1 E-1">10^-1</a></td>
<td><a href="/wiki/Deci" title="Deci">deci</a></td>
<td>d</td>
<td colspan="2">Tenth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-2" title="1 E-2">10^-2</a></td>
<td><a href="/wiki/Centi" title="Centi">centi</a></td>
<td>c</td>
<td colspan="2">Hundredth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-3" title="1 E-3">10^-3</a></td>
<td><a href="/wiki/Milli" title="Milli">milli</a></td>
<td>m</td>
<td colspan="2">Thousandth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-6" title="1 E-6">10^-6</a></td>
<td><a href="/wiki/Micro" title="Micro">micro</a></td>
<td>µ</td>
<td colspan="2">Millionth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-9" title="1 E-9">10^-9</a></td>
<td><a href="/wiki/Nano" title="Nano">nano</a></td>
<td>n</td>
<td>Billionth</td>
<td>Milliardth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-12" title="1 E-12">10^-12</a></td>
<td><a href="/wiki/Pico" title="Pico">pico</a></td>
<td>p</td>
<td>Trillionth</td>
<td>Billionth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-15" title="1 E-15">10^-15</a></td>
<td><a href="/wiki/Femto" title="Femto">femto</a></td>
<td>f</td>
<td>Quadrillionth</td>
<td>Billiardth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-18" title="1 E-18">10^-18</a></td>
<td><a href="/wiki/Atto" title="Atto">atto</a></td>
<td>a</td>
<td>Quintillionth</td>
<td>Trillionth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-21" title="1 E-21">10^-21</a></td>
<td><a href="/wiki/Zepto" title="Zepto">zepto</a></td>
<td>z</td>
<td>Sextillionth</td>
<td>Trilliardth</td>
</tr>
<tr>
<td><a href="/wiki/1_E-24" title="1 E-24">10^-24</a></td>
<td><a href="/wiki/Yocto" title="Yocto">yocto</a></td>
<td>y</td>
<td>Septillionth</td>
<td>Quadrillionth</td>
</tr>
</table>

 

[Jase]

Holy crap! i pasted the html from Wikipedia..

 

[einsteinthe2nd]

Fark......thread got fucked .......hence why dont have HTML code on

 

[superbird]

i doubt they would ask u to convert nano metres to metres. expect centimetre and millimetre conversions tho