PLEASE ANSWERRRRRR

Chemistry

1 answer:

Kay [80]3 years ago

7 0

Electromagnetic wave travels faster through air than metal.

Option A

Explanation:

There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.

So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.

You might be interested in

What is the symbol for the ion that contains 12 protons, 10 electrons, and 12 neutrons?

elena-s [515]

Magnesium ion or Mg 2+

4 0

3 years ago

(pls help !!) question is in image

Anastaziya [24]

Answer:

the second option is correct

Explanation:

maybe I think b is correct

6 0

2 years ago

__________ often cause overactive eye movement. A. Stimulants B. Depressants C. Barbiturates D. None of the above

jeka57 [31]

Stimulants often cause overactive eye movement

Ans (A)

Stimulants are a class of psychoactive drugs that increase the brain activity. They work by acting on the central nervous system and increase the level of mental alertness and impart heightened cognitive functions. Stimulants like nicotine and cocaine cause overactive eye movement.

5 0

2 years ago

Read 2 more answers

Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid

kozerog [31]

Answer:

solubility

Explanation:

Solubility is the ability of a solid, liquid, or gaseous chemical substance (referred to as the solute) to dissolve in solvent (usually a liquid) and form a solution. The solubility of a substance fundamentally depends on the solvent used, as well as temperature and pressure.

hope it helps :)

please mark it the brainliest!

7 0

3 years ago

Describe the difference between Al3+ and N3-

wariber [46]

Al3+ is cation due to its positve charge
N3- is an anion due to its negative charge

4 0

3 years ago