3/26 Electric Flux

Derivation of Work formula for electric force

Flux of a particle

Direction of flux

Flux of an enclosed sufrace

3/19 Electric Charge and Force

Charged a balloon with different objects and then see if the balloon sticks to a uncharged object.

We used strips of Scotch tape to see how the strips with the same charge and with opposite charges reacted.

Here we derived an equation for the Force of a ball hanging from  a string with an angle theta.

This is our graph that we fit manually.

Calculations of electrical force of opposite charged particles.

Here we calculated the ratio between electrical force and gravitational force. Clearly this ratio how much stronger electrical charge is with equal distances. However, may not be true under extreme circumstances.

vPython intro

3D model- Spheres with vectors

3/5/15 Molecular Kinetic Energy



In this experiment, we increased the temperature in a tube by increasing the pressure. Enough heat to burn a small piece of cotton inside. These are the calculations where we found the final temperature.



Add caption




3/3 Pressure and Temperature

Here we predicted what was going to happen when a heated aluminum can with a little bit of water was placed upside down in a container of cold water.

This is a graph of volume vs. pressure. Not linear as we predicted.

Determined the units of Area.

Our predicted graph of temperature vs. pressure.

2/26 Heat Capacity and Temperature

In this part of our lab we had to predict what the metal would do when heated. One side was made of brass and the other of invar. We predicted that it would bend toward the invar side because of the fact that brass expands with less heat than invar does. 

 

In this part, we had to calculate the change in length of a metal rod when heated. We used a rotating sensor in order to measure the change in radians and then from there calculating the length change.

This is a graph of a cup of water being heated at a constant temperature. The graph shows how the rate decreases as it approaches boiling point.

These are calculations used to find the mass of an object that was heated.

Calculations used to find the final temperature. We had to use the heat capacity of water as a solid, heat of fusion, and heat capacity of water as a liquid.



This was a problem that asked how much water at 22 degrees Celsius must be added to a mass of ice in order for the ice to melt and the final temperature be 0 degrees Celsius. We used the heat capacity of ice and the heat of fusion as the ice melted.