Which of the following is INCORRECT regarding analog and digital signals? A.
Analog signals must be interpreted while digital signals are a clear reading or display and are easier to monitor.

B.
Analog signals cannot be read by people, only by computers.

C.
When analog and digital signals are used together, the system is considered a hybrid.

D.
Analog and digital signals are used in speedometers in automobiles.

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

i think the answer would be b

iron would move it is magnetic there is a mag field around the current in the wire