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Rudiy27
3 years ago
8

What is true about constructive interference?A.Amplitudes in the opposite direction interfere to make larger waves.B.Amplitudes

in the same direction interference to larger waves.C.Amplitudes in the same direction interference to make smaller waves.
Chemistry
1 answer:
Alecsey [184]3 years ago
6 0

Answer:

B. Amplitudes in the same direction interference to larger waves

Explanation:

This is because constructive interference is the addition of waves to form a larger wave. In constructive interference, waves with amplitudes moving in the same direction add to form a larger wave.

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Among timber, wind, and oil, which is a fossil fuel and which is not?
Cloud [144]

Answer:

Oil is a fossil fuel and timber or wood and wind is not. Hope this helps!

5 0
1 year ago
Read 2 more answers
How many moles of HCl are present in 4.7 L of a 4.23 M HCl solution?
REY [17]

Hey There!

Volume = 4.7 L

Molarity = 4.23 M

Therefore:

n = M *V

n = 4.23 * 4.7

n = 19.881 moles of HCl

hope this helps!

6 0
3 years ago
3 & 4 Help pleaseeeee
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3 is C i believe, and as for 4 minerals are solid, natural.. that's about all I can say...
4 0
3 years ago
1.00 g of a compound is combusted in oxygen and found to give 3.14g of CO2 and 1.29 g of H2O. From these data we can tell thatA.
lora16 [44]

Answer:

the compound contains C, H, and some other element of unknownidentity, so we can’t calculate the empirical formula

Explanation:

Mass of CO2 obtained = 3.14 g

Hence number of moles of CO2 = 3.14g/44.0 g = 0.0714 mol

The mass of the carbon in the sample = 0.0714 mol × 12.0g/mol = 0.857 g

Mass of H2O obtained = 1.29 g

Hence number of moles of H2O = 1.29g/18.0 g = 0.0717 mol

The mass of the carbon in the sample = 0.0717 mol × 1g/mol = 0.0717 g

% by mass of carbon = 0.857/1 ×100 = 85.7 %

% by mass of hydrogen = 0.0717/1 × 100 = 7.17%

Mass of carbon and hydrogen = 85.7 + 7.17 = 92.87 %

Hence, there must be an unidentified element that accounts for (100 - 92.87) = 7.13% of the compound.

5 0
3 years ago
Give 7 and example of how each wave in the EM spectrum in used in our daily lives
bogdanovich [222]
1. it’s use for our food in like microwaves and ovens
2. airplanes are guided by radar waves,
3.the tv is used by electromagnetic waves
4. they are used in heaters,
5.infrared cameras which detect people in the dark
6.Allows airport security to observe the internal contents of objects and luggage using airport scanners
7.doctors use electromagnetic waves in x-rays
8 0
3 years ago
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