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Match each class of antibody to its function.

Which hormone causes water retention by increasing the number of aquaporins in the distal convoluted tubule?

Through the action of pepsin, the digestion of what begins in the stomach?

Three point charges are fixed in the x-y plane, as shown in the figure. The charges are QA = 2 × 10-6 C, QB = – 2 × 10-6 C, and QC = 2 × 10-6 C. The (x, y) coordinates of each charge are indicated in the figure, with coordinates given in meters (m). Find the x-component of the net electric force (magnitude only) on charge C (in N).

A uniform electric field points vertically downward. A point object of mass 0.2 kg and charge −0.2 C is accelerating vertically upward with an acceleration of 20 m/s². What is the magnitude of the electric field (in N/C)?

An unknown charge Q is located at the origin. Two points, A and B, are shown in the x-y plane. The electric potential at point A is 200 V. What is the electric potential at point B = (0 m, 3 m) (in V)? Assume the electric potential at infinity is zero. [Hint: you do not need to find Q value.]

A point charge A has a charge of +3 × 10-8 C. The (x, y) coordinates of the charge and a point labeled P are shown in the figure, with coordinates given in meters. What is the magnitude of the electric field due to charge A at point P (in N/C)?

Three point-charges are fixed on a horizontal line, as shown in the figure. The separations between the charges are labeled. The charges are QA = + 2 × 10-4 C, QB = – 1 × 10-4 C, QC = + 1 × 10-4 C. Determine the magnitude of the net electric force on charge C (in N).

A spherical conductor with a radius of 0.5 m carries a total charge of 5 × 10-6 C. A point charge of 2 × 10-6  C is placed at its center. What is the magnitude of the electric field at point A that is located at r = 0.4 m from the center of the sphere (in N/C)? 

Federalism describes a system of government where all power resides with the federal government.