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Lena [83]
4 years ago
8

Electromagnetic waves travel because of ____

Chemistry
1 answer:
Murrr4er [49]4 years ago
5 0

because they need a medium to travel they can travel everywhere if they got the medium

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What wave has the longer wavelength
natima [27]

The wavelength is the distance between one crest/trough to another crest/trough. On the image, it's basically the length between each peak of the wave. You can see that the distance between peaks in wave A are much shorter than the distance between the peaks in wave B.

Thus, wave B has the longer wavelength.

8 0
3 years ago
Which of the following is NOT an exothermic reaction?
nignag [31]

Answer:

a) dissolving sugar in water to form a mixture of sugar and water

Explanation:

exothermic reaction is reaction in which is heat is released during the reaction and endothermic reaction is a reaction in which heat is needed or required for the reaction to take place

all the options excluding option A) is exothermic as during the process of formation of bonds in oxidation, heat is released. rusting too is a slow form of oxidation and thus an exothermic reaction.

dissolving sugar in water is not exothermic reaction because their is no heat released. the sugar molecules simply disperses in the water molecules and form a solution.

7 0
3 years ago
If a certain gas occupies a volume of 13 L when the applied pressure is 6.5 atm , find the pressure when the gas occupies a volu
Sav [38]
We should apply Boyle's Law here given initial pressure, initial volume and final volume.

P1V1= P2V2
(6.5 atm) (13 L) = P2 (3.3 L)

Solve for P2 on your calculator and that should get you to the answer.


5 0
3 years ago
Read 2 more answers
Express the following numbers in their expanded forms
Helga [31]
I believe its
a)224000
b)0.000000015
c)0.655
d)9000
5 0
3 years ago
Planet A is an inner planet with no moon and hardly any atmosphere. Planet B is an inner planet with no moon but with a dense at
lubasha [3.4K]

Answer:

C.

Mercury and Venus

Explanation:

It is because none of them have moons and barely have atmospheres due to how close they are to the sun.

5 0
3 years ago
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