Electromagnetic waves are often distinguished from mechanical waves. The distinction is based on the fact that electromagnetic waves . *

A)can travel through materials and mechanical waves cannot
B)come in a range of frequencies and mechanical waves exist with only certain frequencies
C)can travel through a region void of matter and mechanical waves cannot
D)electromagnetic waves cannot transport energy and mechanical waves can transport energy

The  answer is electromagnetic waves can travel through a region void of matter and mechanical waves cannot (option C)

Explanation:

To begin with, electromagnetic waves are waves that are created due to vibrations between a magnetic and electric field. On the other hand, mechanical waves are waves that are created due to vibration in matter or energy transfer through a material medium.

Electromagnetic waves are quite distinct from mechanical waves because the latter requires a material medium to transport energy while the former does not. In fact, electromagnetic waves can carry out transportation of energy through the vacuum of outer space.

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force