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Pavlova-9 [17]
3 years ago
14

Which material absorbs some colors of light and reflects other colors?

Physics
2 answers:
denpristay [2]3 years ago
5 0

Answer:

Which material absorbs some colors of light and reflects other colors?

a pigment

a dye

an ink

a pastel

 

Explanation:

<em>Photosynthetic organisms contain molecules called </em><u>pigments that absorb only specific wavelengths of visible light, while reflecting others. </u>

<u></u>

<u><em>The answer is</em></u>: <u>A pigment.</u>

Novay_Z [31]3 years ago
4 0
A pigment absorbs some colors of light and reflects other colors.

hope this helps!
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Answer:

C. Momentum is conserved but not kinetic energy.

Explanation:

This case represents an entirely inelastic collision, that is, a collision between the car and the truck that reduces total kinetic energy of the entire system, whereas linear momentum is conserved. Hence, correct answer is C.

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2 years ago
An engine has an energy input of 125 J, and 35 J of that energy is transformed into useful energy. What is the efficiency of the
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15 points! An atomic nucleus initially moving at 420 m/s emits an alpha particle in the direction of its velocity, and the remai
alexandr1967 [171]

The alpha particle is emitted at 4235 m/s

Explanation:

We can use the law of conservation of momentum to solve the problem: the total momentum of the original nucleus must be equal to the total momentum after the alpha particle has been emitted. Therefore:

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M =222u is the mass of the original nucleus

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m_1 = 4 u is the mass of the alpha particle

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Solving for v_1, we  find the final velocity of the alpha particle:

v_1 = \frac{Mu-m_2 v_2}{m_1}=\frac{(222)(420)-(218)(350)}{4}=4235 m/s

Learn more about momentum:

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