Day 8 March 18

Today we did section 6.1-6.5 on our handout. For the first part of class we started off by solving some problems on the motion of an electron in a uniform electric field. we learned how an electric field affects the motion of an electron with an initial velocity and that E-field causes the deflection of the electron in the oposite direction of E. we did some calculations on our white boards to prove that the deflection is proportional to voltage.. and by using these equations:
F=ma
F=qV/d
and 2D- kinematics equations for the trajectory of the electron we were able to solve for d, and we realized that the deflection is proportional to Voltage(the higher the voltage the greater the deflection). we needed this information in order to understand the second part of class, which delt with function Generators and Oscilloscopes.
For the second part of class we played around with a function Generator, also called (wave generator) which is a device that can produce different voltages in a regular pattern. we connected a speaker to the wave Generator and we played around with different dials and bottons on it and we noticed the sound changes: 1) changing the frequency changes the pitch of the sound. 2) changing(increasing) the amplitude makes the sound louder . 3) changing the function(sine, triangle or square) changes the timbre of the sound coming out of the speaker. After that we learned how to use an Oscilloscope and we connected in to the function Generator and noticed how changing the frequency and amplitude changes the graph(motion of electron)displayed on the screen of the Oscilloscope. we also learned how to calculate the period by just looking at the graph.
for the last part of lab we built capacitive filter cicuits on our breadbord, and we conected it to the Oscilloscope and the function generator. then we collected data for the changes in amplitude and voltage when we change the input frequency. then we graphed the data we got using loger-pro. and we noticed the constant votage drop in the first circuit(capacitor and resister), and the constant voltage in the second circuit(two resisters).
GOOD LUCK ON THE EXAM!
O MY BAD, (CELEBRATION OF KNOWLEDGE!)