What is the cause of most fire deaths?
select one:
a. accidental injuries sustained during escape and/or evacuation procedures
b. exposure to extreme heat and/or contact with flames and hot surfaces
c. injuries caused by falling materials or structural collapse
d. exposure to toxic gases found in smoke and/or lack of oxygen

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