PLZZ ASAP What is true about the electric and magnetif fields as the electromagnetic wave moves?

a The angle between them is constantly increasing

b They are perpendicular (90º)

c They are parallel

d the angle between them is decreasing

Name the non metal condut electricity

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?