The Unit 4 EXAM in this class this semester will be on 

If you determined you do not need to mask (speech or pure tones) with headphones would the same outcomes be true for inserts?  Why or why not? (Justify your answer). 

What is the magnitude of the electric force of attraction between an iron nucleus (q = +26e) and its innermost electron if the distance between them is 1.5 x 10-12 m?

A 400 Ω resistor, a 5000 μF capacitor, a switch, and a 10 V battery are in series in a single circuit loop.  The capacitor is initially uncharged at t = 0.  What will be the charge on the capacitor after 4 seconds?

What happens to the flux caused by a single point charge enclosed by a surface if that charge is then moved outside of the surface?

If an inductor of 40.0 mH is in a circuit with a constant current of 1.2 mA, how much energy is stored in the inductor?

In the circuit shown below, find the current through the 4 Ω resistor using Kirchoff’s Rules and the given information.

In the circuit shown below, use the given information and Kirchoff’s Rules to find the unknown voltage, V, of the battery on the left.

Determine the total capacitance of the four capacitors (C1 = C2 = 0.40 µF, C3 = 0.20 µF, and C4 = 0.60 µF) arranged in the circuit shown below:

Which of the following is not considered a risk factor for acute bacterial prostatitis?