Which describes the missing step? O After Step 5, radio waves are amplified and
demodulated.
O Before Step 5, radio waves are amplified and
demodulated.
O After Step 3, radio waves are amplified and
demodulated.
Before Step 3, radio waves are amplified and
demodulated.

The radius of an atom is closest in size to a

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

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%