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2 years ago

Discuss the importance of frequency, wavelength and energy in

Physics

1 answer:

lukranit [14]2 years ago

7 0

Answer:

c = λf

E = h f

the characterization of electromagnetism is given as a function of energy or frequency.

Explanation:

In waves the frequency and donut length are related by the speed of the wave

c = λf

therefore the two quantities are not independent.

The energy of an electromagnetic wave is given by

E = h f

where h is the planck constant and f the frequency of the wave

This energy determines how the wave interacts with the surrounding medium. Low energy waves only create movement of the atomic nuclei and as the energy increases, the electrons are excited.

As a result of the above, the characterization of electromagnetism is given as a function of energy or frequency.

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2 years ago

When finding the upper bound of the density, you put what number in the denominator?

lilavasa [31]

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3 years ago

engineers are using computer models to study train collisions design safer train cars. They start by modeling an elastic collisi

Archy [21]

Answer:

The final velocity of the second car is 57 m/s south.

Explanation:

This is an elastic collision between two train cars. In this case, the total kinetic energy between the two bodies will remain the same.

The formula to apply is :

$m_1v_1i +m_2v_2i=m_1v_1f+m_2v_2f$

where ;

$m_1=mass of object 1\\v_1i=initial velocity object1\\m_2=mass of object2\\v_2i=initial velocity object 2\\v_1f=final velocity object 1\\v_2f=final velocity object 2$

Given in the question that;

$m_1=14650kg\\v_1i=18m/s\\m_2=3825kg\\v_2i=11m/s\\v_1f=6m/s\\v_2f=?$

Apply the formula as;

$m_1v_1i +m_2v_2i=m_1v_1f+m_2v_2f$

{14650*18}+{3825*11} = {14650 *6} + {3825 * v₂f}

263700+42075=87900 + 3825v₂f

305775 =87900 + 3825v₂f

305775-87900 = 3825v₂f

217875=3825v₂f

217875/3825 =v₂f

56.96 = v₂f

<u>57 m/s = v₂f { nearest whole number}</u>

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2 years ago

Read 2 more answers

Can someone help asap plz don’t understand how to do this

shtirl [24]

Homie I don’t know either‍♀️Drop out of schl ig ;-;

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3 years ago