02/26/2014

Thermal Expansion:

Testing the ring and stick's different after heat up.

Linear Expansion by using angle data to determine it.

Using steam to heat up the stick, and use angle data
to calculate the expanded length.

object expand when temperature up, and squeeze when temperature down  

Using the angle to solve the circumference to solve the actual length expansion.

------------------------------------------------------------------------------------------------------------Two ways of calculating uncertainty

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Latent Heat:

 Heat up the water~!!

The temperature vs Time graph is a linear graph
which means the Heat Capacity for water is
constant.

The horizontal line shows that water reach
100*C

It will keep a while and go for another linear
graph again if we give water enough energy

Same Lab but by ourselves

The temperature vs Time graph is a linear graph
which means the Heat Capacity for water is
constant.

The horizontal line shows that water reach
100*C

It will keep a while and go for another linear
graph again if we give water enough energy

Due to the Q has already given, latent heat can be solved, and as we known, it's a constant number.

Different because the water spill during the lab, and
also some of heat lose when it changes to steam
which means it become the energy to support the
Latent heat process.

Practice of Qi = Qf

If phase change, the Latent Heat should involved











Ideal Gas:

Pressure means the mass above you that push
down by gravity.

If is liquid then it's the cylinder volume over object, and decided by its area.

Pressure vs Area

It's a parabola slop

We can see that same force gives smaller area more
pressure than bigger area.

It's not a linear means that it not a constant change

Testing pressure on different temperature.

On the pressure vs temperature graph is a linear slop.

The pressure increase when temperature increase, and decrease when temperature decrease.

This means temperature change constantly with delta T.