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Dennis_Churaev [7]
4 years ago
5

Scientists often say that light and other forms of electromagnetic radiation have a dual nature

Physics
1 answer:
Alex4 years ago
7 0

Answer:

Behaves as a wave.

Explanation:

The dual nature of light means that light behaves as a wave. If the light consisted of small particles, the alternating light and dark bands would not have occurred.

Sometimes it behaves like a particle (called a photon), which explains how light travels in straight lines.

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((Psychology))An action that benefits others but not ourselves is an example of:
uranmaximum [27]
B altruism.
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noun
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4 years ago
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An object at rest is suddenly broken apart into fragments a and b by an explosion. the fragment a acquires three times the kinet
lbvjy [14]

Momentum will be conserved in one dimension in the explosion.

<span> Given that the fragment a acquires three times the kinetic energy of the fragment b.  
<span>
P</span><span><span>initial </span><span>= p</span></span>final ⇒ 0 =mₐv⁰ₐ+mьv⁰ь= 0 ⇒ v⁰ь = -mₐv⁰ₐ/mь

KE= 3KEь

⇒1/2 mₐv⁰ₐ² = 3 (1/2mьv⁰ь²) 
</span><span>
⇒1/2 mₐv⁰ₐ²  = 3/2 mь(-mₐv⁰ₐ/mь)²

⇒1/2 mₐv⁰ₐ²  = 3/2 mь(mₐ²v⁰ₐ²/mь²)

</span>

⇒1/2 x 2/3 = mₐ/mь= 1/3


<span> <span> Thus the ratio of the masses of the fragments is 1:3.    </span></span>
4 0
4 years ago
3. Two bullets have masses of 0.003 kg and 0.006 kg, respectively. Both are fired with a speed of 40.0 m/s.
Novay_Z [31]

Answer:

A. The bullet with 0.006kg has more energy

B. When the mass is doubled the kinetic energy increases

Explanation:

Kinetic energy increases when mass increases

kinetic energy increases when velocity increases

6 0
3 years ago
Are There some sounds for which we are all deaf
lana66690 [7]

Answer: Infrasound is the span of low-frequency sounds below 20 Hz that fall below the hearing range of humans. While these sounds escape our ears, scientific instruments can detect them—and tell us some interesting things about the planet.

Explanation:

6 0
3 years ago
How much energy is released when the correct number of protons and neutrons come together to form deuterium? a) 0.52 MeV b) 1.7
irga5000 [103]

<u>Answer:</u> The correct answer is 2.24 MeV.

<u>Explanation:</u>

The chemical reaction for the formation of deuterium from proton and neutron follows:

_{1}^1\textrm{H}+_0^1\textrm{n}\rightarrow _1^2\textrm{H}

We are given:

Mass of _{1}^{1}\textrm{H} = 1.00784 u

Mass of _{0}^{1}\textrm{n} = 1.008665 u

Mass of _{1}^{2}\textrm{H} = 2.014102 u

To calculate the mass defect, we use the equation:

\Delta m=\text{Mass of reactants}-\text{Mass of products}

\Delta m=(m_{_1^2H}+m_{n})-(m_{_1^2H})\\\\\Delta m=(1.00784+1.008665)-(2.014102)=0.002403u

To calculate the energy released, we use the equation:

E=\Delta mc^2\\E=(0.002403u)\times c^2

E=(0.002403u)\times (931.5MeV)    (Conversion factor:  1u=931.5MeV/c^2  )

E=2.24MeV

Hence, the energy released in the given nuclear reaction is 2.24 MeV.

5 0
3 years ago
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