Drag, L/D, and best glide

Change the airspeed and watch the same sweet spot show up on both graphs.

Airspeed
100kt
Angle of attack
2°
Total drag
0lb
L/D ratio
0: 1
L/D vs. angle of attack

Like PHAK Figure 5-5. How much lift you get for the drag you pay.

Drag vs. airspeed

Like PHAK Figure 5-6. Parasite, induced, and total drag.

What the drag is made of right now
Parasite drag (just resistance)
Form0
Interference0
Skin friction0
Induced (cost of lift)0
Engine out from 3,000 ft