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igor_vitrenko [27]
4 years ago
10

In what medium would light have the longest wavelength

Physics
1 answer:
MariettaO [177]4 years ago
7 0

Answer:Vacuum

Explanation:

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Which of the following account for the difference between radio waves , infrared waves, and ultraviolet rays?
gayaneshka [121]

Answer: B

The only difference between these different types of radiation is their wavelength or frequency

Explanation:

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what kinds of investigations might have led to our current understanding of matter and energy? why is it important for scientist
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The kind of investigations might have led to our current understanding of matter and energy is research and measurement.

It is important for scientists to use the same scientific method and consistent measurement units in order to get the correct value while analayzing.

<h3>What is matter?</h3>

The matter has volume and space occupied.

When conceivable the researcher endeavors to test his speculations via painstakingly planned and controlled tests that will yield quantitative instead of subjective outcomes.

Thus, the kind of investigations might have led to our current understanding of matter and energy is research and measurement.

It is important for scientists to use the same scientific method and consistent measurement units in order to get the correct value while analayzing.

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2 years ago
A plane flying at an altitude of 33,000 feet at a speed of 630 miles per hour releases a bomb. Find the tangential and normal co
Galina-37 [17]

Ignoring air resistance . . .

After the bomb is released, tangential (horizontal) acceleration is zero,, normal (vertical) acceleration is 9.8 m/s^2 down (gravity).

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3 years ago
Explain how information is transferred from one telephone to another one when both the telephones are mobile phones 
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Satellites transfer all our information from ken mobile device to another
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A laser used for many applications of hard surface dental work emits 2780-nm wavelength pulses of variable energy (0-300 mJ) abo
Bess [88]

Answer:

a

    n =  1.119 *10^{18} \ photons

b

  P  =  1.6 \ W

Explanation:

From the question we are told that

    The wavelength is  \lambda  =  2780 nm =  2780 *10^{-9} \ m

     The  energy  is  E =  80 mJ  =  80 *10^{-3} \ J

This energy is mathematically represented as

     E   = \frac{n  *  h *  c }{\lambda }

Where  c is the speed of light with a value  c =  3.0 *10^{8} \ m/s

             h is the Planck's  constant with the value  h  =  6.626 *10^{-34} \ J \cdot s

             n is the number of pulses

So

      n =  \frac{E * \lambda }{h * c }

substituting values

       n =  \frac{80 *10^{-3} *  2780 *10^{-9}}{6.626 *10^{-34} * 3.0 *10^{8} }

       n =  1.119 *10^{18} \ photons

Given that the pulses where emitted 20 times in one second then the period of the pulse is

       T  =  \frac{1}{20}

      T = 0.05 \ s

Hence the average power of photons in one 80-mJ pulse during 1 s is mathematically represented as

       P  =  \frac{E}{T}

substituting values

       P  =  \frac{ 80 *10^{-3}}{0.05}

        P  =  1.6 \ W

6 0
4 years ago
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