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Gekata [30.6K]
4 years ago
9

Of the reactants. This outcome causes the particles to collide, which results in

Physics
1 answer:
alexandr1967 [171]4 years ago
5 0

Answer:

Explanation:....................

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8. Before leaving the ground an airplane traveling with constant acceleration makes a run on the
Effectus [21]

Answer:

\color{Blue}\huge\boxed{Answer}

<h3>B. Speed at which it leaves the ground</h3>
8 0
3 years ago
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A plasma wave moving through a plasma has a frequency of 109 Hz and a speed of 3.0 × 107 m/s. What is the wavelength of this wav
tigry1 [53]

Answer:0.27*10^{6} (m)

Explanation:

with a wave we know that  speed= wavelenght* frecuency   so

wavelenght= 3*10^{7} / 109  = 0.27*10^{6} (m)

8 0
3 years ago
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
ANSWER FAST FOR BRAINLIEST!
Ne4ueva [31]

Answer:

the last one

Explanation:

7 0
3 years ago
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How are electromagnetic waves produced? A) An accelerating electric point charge (electron) emits electromagnetic waves. B) A ba
shusha [124]
Hello,

Here is your answer:

The proper answer to this question will be option A "An accelerating electric point charge (electron) emits electromagnetic waves." That's because electromagnetic waves are formed by motion of electrically charged particles (electrons)!

Your answer is A!

If you need anymore help feel free to ask me!

Hope this helps!
8 0
3 years ago
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