Match each statement with the correct feeding mechanism

The production of red blood cells is stimulated by 

When it comes to IOL calculations for cataract surgery, the following statements are true, except:

Four capacitors are connected across a 90-V voltage source as shown in the figure.  (a) What is the charge on the 4.0-μF capacitor?  (b) What is the charge on a 2.0-μF capacitor?  (c) What is the charge on the 3.0-μF capacitor?  (d) What is the potential difference across the 6.0-μF capacitor?

A charged capacitor is connected to an ideal inductor. At time t = 0, the charge on the capacitor is equal to 6.00 μC. At time t = 2.00 ms the charge on the capacitor is zero for the first time. What is the amplitude of the current at that same instant?

As shown in the figure, a rectangular current loop is carrying current I = 3.0 A, in the direction shown, and is located near a long wire carrying a current Iw. The long wire is parallel to the sides of the rectangle. The rectangle loop has length 0.80 m and its sides are 0.10 m and 0.70 m from the wire, as shown. We measure that the net force on the rectangular loop as 4.9 × 10-6 N directed towards the wire.    (a) What is the magnitude of the current Iw?   (b) In which direction does Iw flow: from top to bottom or from bottom to top in the sketch? 

The eyes and the respiratory tract are both protected against infections by _____.

When two or more capacitors are connected in series across a potential difference,  

A charge Q = -610 nC is uniformly distributed on a ring of 2.4-m radius. A point charge q = +480 nC is fixed at the center of the ring, as shown in the figure. An electron is projected from very far away toward the ring along the axis of the ring. This electron comes to a momentary halt at a point on the axis that is 5.0 m from the center of the ring. What is the initial speed of the electron? (mel = 9.11 × 10-31 kg)

Your patient has opacities in the stroma of their cornea.  The doctor wants a good photo for documentation purposes.  Of the slit lamp techniques below, which will you use?