Models of torpedoes are sometimes tested in a horizontal pipe of flowing water, much as a wind tunnel is used to test model airplanes. Consider a circular pipe of internal diameter 25.0 cm and a torpedo model aligned along the long axis of the pipe. The model has a 6,00 cm diameter and is to be tested with water flowing past it at 2.00 m/s. (a) With what speed must the water flow in the part of the pipe that is unconstricted by the model? (b) What will the pressure difference be between the constricted and unconstricted parts of the pipe?

Explanation

To solve the problem step by step, we will follow the principles of fluid dynamics, specifically the continuity equation and Bernoulli's equation.

### Given Data:
- Diameter of the pipe (D) = 25.0 cm = 0.25 m
- Diameter of the torpedo model (d) = 6.00 cm = 0.06 m
- Velocity of water in the constricted part (V2) = 2.00 m/s

### (a) Finding the speed of water in the unconstricted part of the pipe (V1):
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