Which type of wave does not require a medium to travel through?
A.
wave created by x-rays as they create an image of a bone
B.
wave created by plucking the strings of a guitar
C.
wave created by dropping a pebble in water
D.
wave created by squeezing and releasing a spring
A.
wave created by x-rays as they create an image of a bone
B.
wave created by plucking the strings of a guitar
C.
wave created by dropping a pebble in water
D.
wave created by squeezing and releasing a spring