Unlike mechanical waves, electromagnetic waves can travel through a such as you would in space

vacuum without a material medium for its propagation

Explanation:

Unlike mechanical waves, electromagnetic waves can travel through a vacuum without a material medium for its propagation such as you would in space

Mechanical waves need a medium for its propagation when travelling through a vacuum while electromagnetic wave does not need a material medium for its propagation when travelling through a vacuum.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge