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ITB LC serves you better ACADEMIC WRITING [FRIDAY]: TASK 2

Thursday, February 24, 2005

TASK 2

TASK 2,
ELBOW ROOM.
Erwan Yonata
13004108
Task 2

There is a mistake in paragraph “Elbow Room”. It is the statement that clarify the molecules in a gas resist crowding and get as far apart as possible. As we know, the molecules in a gas move freely and randomly. This may cause the molecules resist crowding, but it can’t make them get as far apart as possible. This is caused by the fact that although the molecules in a gas act some pushes each other, it may not give an enough energy to make them get as far apart as possible. It is caused by besides it, there is an interaction force among the molecules that pull each other can reduce the pushes power, we call it chemical bonding. For this reason, I clarify the first sentence as a wrong statement.

posted by Jati at Thursday, February 24, 2005

3 Comments:

Blogger Jati said...

Dear Felix, Dwianto, Satriyo.
Thanks for the work and we will discuss them in class.

Wednesday, February 23, 2005 3:26:00 PM  
Blogger Jati said...

Wednesday, February 23, 2005
I disagree with the statements in “Elbow Room” because of several reasons. Firstly, it is incorrect to mention that gas resist crowding. The correct statement should say that gas molecules move freely and they conform to the contour and volume of its container. Secondly, gas molecules don’t push each other giving each molecule the maximum possible distance. In fact, the distances between each molecule are different and change all the time as gas molecules move freely inside its container. Lastly, the electrons within the copper ball do not distribute themselves as gas molecules do. Electrons are charged particles and they will repel other electrons as they have the same negative charge. Therefore, when a copper ball is charged with electricity, the distribution of the free electrons is based on this rule.

Fatrian R. Rusydy
13004035

Friday, February 25, 2005 12:23:00 PM  
Blogger vanya said...

I disagree with your statements in Elbow Room because gas molecules and free electrons act differently. Gas molecules do not resist crowding but they move randomly to fill the empty space in a tank. Based on Kinetic Gas Theory, gas molecules move freely on their own velocity. They collide each other and hit the tank's wall. Thereby, distance between each molecule become maximume and makes the molecules distribute themselves uniformly. Copper ball is a solid conductor. Therefore, some electrons do not bound in their atoms but they move freely in that material. These electrons are called free electrons. They resist crowding and repel each other because they contain the same negative charge. When a copper ball is charged with electricity, free electrons begin to flow in an electric field. Based on Gauss Law, the electric field inside the copper ball is zero. While the electric field in the surface becomes stronger when there are more electrons reach that place. Electrical potential inside the ball is always higher than the surface. Thus makes free electrons gather at the surface and do not distribute uniformly in a charged copper ball.

Friday, February 25, 2005 12:55:00 PM  

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