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vlada-n [284]
2 years ago
8

What results when two waves that are completely out of phase meet?

Chemistry
2 answers:
ELEN [110]2 years ago
5 0

Answer:

The result is a superposition which is twice the amplitude of each input wave. Φ = π means the two waves are completely OUT OF PHASE, and so add completely destructively. The result is a superposition which has no amplitude at all.

Explanation:

The result is a superposition which is twice the amplitude of each input wave. Φ = π means the two waves are completely OUT OF PHASE, and so add completely destructively. The result is a superposition which has no amplitude at all.

kherson [118]2 years ago
5 0

Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero.
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A pure gold ring weighs 23.5 grams. How many atoms of gold<br> are in the ring?
Digiron [165]

The number of atoms of gold in the pure ring are 7.18 × 10²² atoms.

<h3>HOW TO CALCULATE NUMBER OF ATOMS?</h3>

The number of atoms in a substance can be calculated by multiplying the number of moles of the substance by Avogadro's number.

The number of moles in the gold (Au) can be calculated by dividing the mass of gold by its molar mass (196.97g/mol).

no. of moles = 23.5g ÷ 196.97g/mol

no. of moles = 0.119mol

Number of atoms in Au = 0.119 × 6.02 × 10²³

no. of atoms = 7.18 × 10²² atoms.

Therefore, the number of atoms of gold in the pure ring are 7.18 × 10²² atoms.

Learn more about number of atoms at: brainly.com/question/15959704

3 0
3 years ago
Corn plants and milkweed plants grow in the same area. Over several years, the milkweed plants have taken over the field and the
Katyanochek1 [597]

Answer:

This question is incomplete, the complete part of the question is as follows:

This best demonstrates which type of an interaction between the plants?

A. cooperation

B. parasitism

C. commensalism

D. competition

The answer is D

Explanation:

Organisms in their natural environment interact with one another in so many ways. The ways by which this interaction occurs are; competition, predation, commensalism etc.

Competition is the interaction between two organisms in which one or both organisms are harmed due to limited resources. Competition occurs when the organisms involved occupy the same niche or utilize the same limited resources.

In this question involving corn plants and milkweed plants. They are said to grow in the same area. Over several years, the milkweed plants have taken over the field and the corn plants no longer have space to grow. In this case, there is a limited space for growth, hence, the corn plant and milkweed COMPETE.

8 0
3 years ago
An engineer uses aluminum to build an airplane rather than composite
lesantik [10]

Answer:

A

Explanation:

I would assume A because it says in the problem statement that chooses aluminum because he is worried that composite will suddenly fail... therefore he would use aluminum because it would bend before breaking and therefore show warning.

5 0
3 years ago
In an element’s square on the periodic table, the number with the greatest value represents the
sergey [27]

Answer: D.atomic mass.

Explanation: The general representation of an element is given by: _Z^A\textrm{X}

X = chemical symbol of element

Z= atomic number= which represents the number of electrons.

A= mass number or atomic mass =which represents the number of electrons + number of neutrons

Thus mass number is greater than number of electrons and number of neutrons as it is the sum of both.




6 0
3 years ago
У 2грамах воднню скільки молекул і скільки атомів<br>​
Alekssandra [29.7K]

In 2 g H₂ there are 6,023.10²³ molecules H₂ and 2 x 6,023.10²³ atoms H

<h3>Further explanation </h3>

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

 

The question is :

<em>in 2 grams of hydrogen how many molecules and how many atoms</em>

  • mol of Hydrogen - H₂

MW H₂ = 2.01568 u  (2 atoms of H)

MW H = 1.00784 u

\tt mol=\dfrac{m}{MW}\\\\mol=\dfrac{2~g}{2.01568 u}=0.992

  • number of molecules

\tt 0.992\times 6.02\times 10^{23}=5.97\times 10^{23}

  • mol of H

\tt mol=\dfrac{2}{1.00784}= 1.984

  • number of atoms

\tt 1.984\times 6.02\times 10^{23}=11.94\times 10^{23}

Or a simply way :

1 g of H atoms = 1 mol of H  (MW H = 1 g/mol)

2 g of H atoms (in 2 gr H₂) = 2 moles of H  

2 g of H₂ molecules = 1 mole of H₂  (MW H₂=2 g/mol)

so in 2 g H₂ there are 6,023.10²³ molecules H₂ and 2 x 6,023.10²³ atoms H

4 0
3 years ago
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