You are caulking a window. The caulk is rather thick and, to lay the bead correctly, the exit nozzle is small. A caulking gun uses a plunger which is operated by pulling back on a handle. You must squeeze the handle very hard to get the caulk to come out of the narrow opening because:.A. pressure is distributed uniformly throughout the fluid and the area of the plunger is much larger than the area of the opening. B. viscous drag between the walls of the tip and the caulk causes the caulk to swirl around chaotically. C. Newton’s third law requires most of the energy in the caulk to be used to push back on the plunger rather than moving it through the tip. D. the high density of the caulk impedes its flow through the small opening.

A. pressure is distributed uniformly throughout the fluid and the area of the plunger is much larger than the area of the opening.

Explanation:

Pressure is the force acting per unit area.  Also, pressure is transmitted undiminished to every of the fluid under pressure, so the same pressure at the plunger will be transmitted to the small opening. Since the opening area is small, the force required to force the caulk out of the opening under pressure will have to be very large at the plunger to be sufficient to force the caulk out of the small opening area.

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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