Monday, July 31, 2017

kalkulator fizik, kalkulator untuk mengira momentum

kalkulator fizik, kalkulator untuk mengira momentum kalkulator fizik, kalkulator untuk mengira momentum, formula momentum ialah jisim darab halaju. Momentum = jisim x halaju
sila masukkan nilai Jisim dan Halaju untuk mengira nilai Momentum.
Nilai momentum akan dipaparkan setelah pengguna memasukkan nilai jisim dan halaju.


kalkulator fizik, kalkulator untuk mengira momentum, formula momentum ialah jisim darab halaju.

Thursday, February 19, 2015

How solid carbon dioxide (CO2) is produced

(1.) First, gases with a high concentration of carbon dioxide are produced. Such gases can be a byproduct of another process, such as producing ammonia from nitrogen and natural gas, or large-scale fermentation

(2.) Second, the carbon dioxide-rich gas is pressurized and refrigerated until it liquifies 

(3.) Next, the pressure is reduced. When this occurs some liquid carbon dioxide vaporizes, causing a rapid lowering of temperature of the remaining liquid (the vaporized CO2 will absorb some of the heat from the liquid when it vaporized).

(4.) Finally, the extreme cold causes the liquid to solidify into a snow-like consistency 

CO2 melting point is −56.6 °C; −69.8 °F; 216.6 K (Triple point at 5.1 atm) 
CO2 sublimation condition is −78.5 °C; −109.2 °F; 194.7 K (1 atm)
Diagram of solid CO2 production

Monday, May 13, 2013

Create Hydrogen gas through Hydrolysis of water

Hydrogen gas, which is the lightest gas, can be obtained from the hydrolysis of water. Here is some simple diagram for set up of the experiment of hydrolysis of water which will produce both hydrogen and oxygen gas.
                                          DIAGRAM OF HYDROLYSIS OF WATER

1.) Set up the apparatus and materials as shown in the figure above.
2.) Make sure both the tube is filled with water before the experiment to make sure you will collect pure hydrogen.
2.) You can get the carbon as electrode from pencil.
3.) The electrode with more gas produced is hydrogen gas. and the less gas produced is oxygen gas.

CAUTION : the mixture of hydrogen and oxygen can cause explosion. do at your own risk.

Monday, January 30, 2012

CMD trick : make your file invisible using CMD

You can use this trick to hide your folder if you use a computer that others use too.
1.) Search for cmd and copy it-->>

2.) Paste it in the same places with the folder that you want to make invisible -->>
3.) Now, open the cmd and type
attrib (folder name) +s +h
(without the "(" and ")" symbol.)

4.) The folder is now invisible, to make it appear again, type at the cmd :
attrib (folder name) -s -h
(without the "(" and ")" symbol)

However, the file will be visible if you choose to view the protected operating system file
tools>folder option>view

Tuesday, October 11, 2011

How to make ethanol by fermentation

Human has used this process for thousands of years to make ethanol from sugars and starches. Yeast is added to sugar or starch and left in a warm places in the absence of air. In fermentation process, the enzyme released by yeast that is called Zymase slowly decomposes the glucose to form ethanol and carbon dioxide. When the concentration of ethanol formed reaches about 15%, the yeast is killed off and the fermentation stops. Hence, it is impossible to produce ethanol by natural fermentation. The ethanol is purified by fractional distillation.

1> Glucose is dissolved in distilled water
2> Yeast is added to the mixture and the mixture is shaken well
3> The conical flask is closed with with a stopper as shown.4> The apparatus is left in a warm place (about 35 degrees celcius) for about a week
5> After about a week, the contents of the conical flask are filtered. The filtrate is poured into a distillation flask. The apparatus is set up as shown

Caution: Ethanol is highly flammable

Tuesday, October 4, 2011

Naruto use shadow clone to help them in the war. Is he already forgot what Eight-Tails told him that he shouldn't use shadow clones when he is in Tailed Beast Chakra Mode ? The kyuubi will absorb a portion of his chakra and he will run our of chakra and die in an instant...