Upside down?
4. A simple garden syringe used to
produce a jet of water consists of
a piston with an area of 4.00 cm?
which moves in a horizontal cylinder
with a small hole at its end. If the
force on the piston is 50 N, calculate
the speed at which the water is forced
out of the small hole. Assume that
the speed of the piston is negligible.

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c