Which of the following can travel through empty space?

a. electromagnetic waves

b. sound waves

c. mechanical waves

d. longitudinal waves

Name the non metal condut electricity

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

Failure to accomplish erikson’s psychosocial task of late adulthood leads to despair. a. true b. false