Electric Charge
After the ball had been rubbed against the hair, it had charged, particularly positive, therefore it would stick to the glass door
Preparing for the experiment
For this experiment, we took another two pieces of tape and placed them on top of the previous ones.
Remark: The top would repel against the other top, but attracting to the other bottom. Therefore, the charges of the top and the bottom were opposite.
Our observation for the second experiment.
Here we have the electrical force F=A/x^2. With A=1.37*10^-5. The ratio difference is A/K= 1.37*10^-5/ 8.99*10^9 approximately about 1.52*10^-15.
b. Pick a point that has electrical force to be F_e= 0.001 and x2=0.103. We can calculate the charge of two balls q_1=q_2=( F_e/ k*x2^2)^(1/2)=(0.001/8.99*10^9*0.103^2)^1/2=3.2*10^-6C
c. Now we have the charge q_1= 0.5q_2. q_2= (F_e/2k*x2^2)^1/2=(0.001/(2*8.99*10^9*0.103^2)^1/2=2.28*10^-6C.
q_1=q_2/2=1.14*10^-6C
We calculated the charged of one onto another point charge.
This is a charge creator.
The strips are shrinking down because the charges go into the motor.
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