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PilotLPTM [1.2K]
3 years ago
13

3) __________ transmit signals that carry pictures, data, music and conversations invisibly over long distances and have been th

e basis for almost all non-written communication and most wireless technologies used by humans today. A) Microwaves B) Radio waves C) Seismic waves D) Infrared waves
Chemistry
2 answers:
kondaur [170]3 years ago
8 0
The correct answer is letter b. Radio Waves.

<span> Radio waves are generated </span>by way of <span>radio transmitters and </span>acquired by using<span> radio receivers. </span>one of a kind<span> frequencies of radio waves have </span>distinct<span> propagation </span>characteristics in the<span> Earth's </span>atmosphere<span>. It is also known to be a kind of electromagnetic radiation.</span>
kykrilka [37]3 years ago
8 0

The correct in this question is B, because air planes use towers and those towers use radio waves to find and direct the planes.

You might be interested in
if 1.0 L of a 2.0 M solution contains 1.204 * 10^24 molecules of a solute, how many molecules of solute will 1.0 L of a 0.5 M so
Rama09 [41]

The formula for molariy is nomber of moles/volume

0.5=n/1=>n=0.5 moles

one mole contains 6.023*10^23 molecules

so 0.5 contain 3.0115*10^23 molecules

4 0
3 years ago
SOMEONE PLEASE HELP, I REALLY NEED THIS
kompoz [17]

Answer: TWO WITH LIGHT PINK PRECIPITATE IS  

BaCI2 and AI2(SO4)3 AND BaCI2 and NaOH

Ferric hydroxide and aluminium hydroxide are the precipitate u can form by any major reaction.

Explanation:  Chemical Reaction: BaCl2 and AgNO3

                             Ba+2= Barium= Metal

                             Cl-1= Chlorine = Non-metal

Ag+1 = Silver= Transition Metal

                              NO3 - = Nitrate= Polyatomic Ion

                             BaCl2 = Barium chloride  

Ag(NO3) = Silver (I) Nitrate

5 0
4 years ago
An object has a volume of 2 cm3 and a mass of 4 g. What is the density of the object?
VikaD [51]

Answer: 2.0 grams per cubic centimeter

Explanation: i had this

8 0
3 years ago
Explain your answer.
Lilit [14]

Answer:

14. (C) -3; 16. B. 0, 3

Explanation:

14. Ionic charge

X: ns²np³.

The element is three electrons short of having a complete octet.

It is likely to react chemically to add those three electrons and form an X³⁻ ion.

16. Orbitals in subshells

The n = 1 shell contains no p orbitals. All the other shells contain three p orbitals.

The n = 1 shell contains only one s orbital. Every higher shell contains a p subshell, and each p subshell contains three p orbitals.

3 0
3 years ago
Picture attached.........
aliina [53]

Answer: The Answers are: 0.31g & 0.011mol & 3.34g & 0.016mol.

Explanation: Solved in the attached picture.

7 0
3 years ago
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