Water is discharged from reservoir into the atmosphere through a pipe 50 m long. There is a sharp entrance to the pipe and the diameter is 150 mm for the first 35 m. The outlet is 9 m below the surface level in the reservoir. The pipe then enlarges suddenly to 300 mm in the diameter for the remainder of its length. Take f = 0.001 for the booth pipes. Considering losses due to friction in booth pipes and sudden enlargement only, calculate the discharge.​

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0