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Annette [7]
2 years ago
6

You and I see, hear, and think with ___________________________. Waves carry _____________________. The wave in the speaker, on

the screen, in the air, and in the string are all ________________________ forms of the same energy. They are all waves. Low frequency waves are _________________________ apart. The faster you vibrate the spring, the _______________ the wavelength will be. Energy travels through the wave out in _________________ directions. All waves have a similar _______________________. ___________________ of electromagnetic waves are light , x-rays, microwaves, radar, radio and television signals. ______________________ have so much energy that they can go through your skin and muscle until they hit your bone. Earthquakes can _______________________ in waves. Earthquake waves are called ______________________ waves. Sonar uses sound waves to find things ________________.
Physics
1 answer:
kondaur [170]2 years ago
7 0

Answer:

eyes heard and brain.,  Energy, different   ___ forms of the same energy,

less  ___ the wavelength

Explanation:

In this exercise you are asked to complete the sentences.

You and I see, hear, and think with    eyes heard and brain.

Waves carry Energy _______.

The wave in the speaker, on the screen, in the air, and in the string are all _

different   ___ forms of the same energy.

They are all waves. Low frequency waves are __

amount of energy ____________ apart.

The faster you vibrate the spring, the __less  ___ the wavelength will be. Energy travels through the wave out in ___all________ directions.

All waves have a similar ___form and equation  ____ of electromagnetic waves are light , x-rays, microwaves, radar, radio and television signals. ___X-Ray and gamma______ have so much energy that they can go through your skin and muscle until they hit your bone.

Earthquakes can _ produce longitudinal and transverse _______ in waves. Earthquake waves are called __P and S _______ waves.

Sonar uses sound waves to find things _object by sound reflection____.

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Answer:

True

Explanation:

Because in atom the negative charge become lose or gain.

6 0
3 years ago
An electron and a proton each have a thermal kinetic energy of 3kBT/2. Calculate the de Broglie wavelength of each particle at a
S_A_V [24]

Answer:

Given:

Thermal Kinetic Energy of an electron, KE_{t} = \frac{3}{2}k_{b}T

k_{b} = 1.38\times 10^{- 23} J/k = Boltzmann's constant

Temperature, T = 1800 K

Solution:

Now, to calculate the de-Broglie wavelength of the electron, \lambda_{e}:

\lambda_{e} = \frac{h}{p_{e}}

\lambda_{e} = \frac{h}{m_{e}{v_{e}}              (1)

where

h = Planck's constant = 6.626\times 10^{- 34}m^{2}kg/s

p_{e} = momentum of an electron

v_{e} = velocity of an electron

m_{e} = 9.1\times 10_{- 31} kg = mass of electon

Now,

Kinetic energy of an electron = thermal kinetic energy

\frac{1}{2}m_{e}v_{e}^{2} = \frac{3}{2}k_{b}T

}v_{e} = \sqrt{2\frac{\frac{3}{2}k_{b}T}{m_{e}}}

}v_{e} = \sqrt{\frac{3\times 1.38\times 10^{- 23}\times 1800}{9.1\times 10_{- 31}}}

v_{e} = 2.86\times 10^{5} m/s                    (2)

Using eqn (2) in (1):

\lambda_{e} = \frac{6.626\times 10^{- 34}}{9.1\times 10_{- 31}\times 2.86\times 10^{5}} = 2.55 nm

Now, to calculate the de-Broglie wavelength of proton, \lambda_{e}:

\lambda_{p} = \frac{h}{p_{p}}

\lambda_{p} = \frac{h}{m_{p}{v_{p}}                             (3)

where

m_{p} = 1.6726\times 10_{- 27} kg = mass of proton

v_{p} = velocity of an proton

Now,

Kinetic energy of a proton = thermal kinetic energy

\frac{1}{2}m_{p}v_{p}^{2} = \frac{3}{2}k_{b}T

}v_{p} = \sqrt{2\frac{\frac{3}{2}k_{b}T}{m_{p}}}

}v_{p} = \sqrt{\frac{3\times 1.38\times 10^{- 23}\times 1800}{1.6726\times 10_{- 27}}}

v_{p} = 6.674\times 10^{3} m/s                               (4)                    

Using eqn (4) in (3):

\lambda_{p} = \frac{6.626\times 10^{- 34}}{1.6726\times 10_{- 27}\times 6.674\times 10^{3}} = 5.94\times 10^{- 11} m = 0.0594 nm

7 0
3 years ago
Why are unit of length mass and time independent with each other?​
mariarad [96]
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Базовые единицы произвольно определены как то, что они есть, поэтому они не могут быть получены.

Все другие единицы в системе СИ являются производными от 7 основных единиц, таких как скорость (метр / секунда).

Остальные 4 - это температура (Кельвин), количество вещества (моль), электрический ток (ампер) и светимость (кандела).
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Is a measure of how closely packed together the particles of matter are in a specific volume
Mnenie [13.5K]

Answer:

Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density.

Explanation:

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What types of electromagnetic radiation has a shorter wavelength than ultraviolet?
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