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Darina [25.2K]
3 years ago
7

Select the correct arrows. Identify the arrows that show the correct direction of heat transfer.

Physics
2 answers:
ohaa [14]3 years ago
4 0

Answer: Is there suppose to be a picture?

Explanation:

ASHA 777 [7]3 years ago
4 0
Mmmmm is there a picture???
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How many justified by Bohr model?
Dominik [7]

X-ray formation

Energy difference in the first ionization of the same group of elements

Differential linear emission spectra of different elements

Explanation:

The formation of x-ray, energy difference in the first ionization of the same group of elements and differential linear emission spectra of different elements can be justified by the Bohr model of the atom.

  • According to Neil Bohr, in an atom, the extranuclear part consists of electrons in specific spherical orbits around the nucleus.
  • Bohr's model explained the discrete lines in atomic spectrum of different elements.
  • Due to excitation of electrons, some rays are given off. Some of these are energetic like x-rays.
  • The energy difference between the first ionization of the same group of elements is a proof that electrons are in specific spherical orbits.
  • The higher the energy the level, the ease at which electrons can be removed and the lower the ionization energy.

Learn more:

Bohr model of the atom brainly.com/question/4986277

#learnwithBrainly

3 0
4 years ago
3. What conclusion can you make about the electric field strength between two parallel plates? Explain your answer referencing P
KIM [24]

Answer:

From the relation above we can conclude that the  as the distance between the two plate increases the electric field strength decreases

Explanation:

I cannot  find any attached photo, but we can proceed anyways theoretically.

The electric field strength (E) at any point in an electric field is the force experienced by a unit positive charge (Q) at that point

i.e

E=\frac{F}{Q}

But the force F

F= \frac{kQ1Q2}{r^2}

But the electric field intensity due to a point charge Q at a distance r meters away is given by

E= \frac{\frac{kQ1Q2}{r^2}}{Q} \\\\\E= \frac{Q1}{4\pi er^2 }

<em>From the relation above we can conclude that the  as the distance between the two plate increases the electric field strength decreases</em>

6 0
3 years ago
At a certain location, the horizontal component of the earth's magnetic field is 2.5 × 10−5 T, due north. A proton moves eastwar
Bogdan [553]

Answer:

  v = 4.10 10⁻³ m / s

Explanation:

For this exercise we will use Newton's second law where the force is magnetic

       F -W = m a

As the field is directed to the north and the proton to the east, using the rule of the right hand the force is vertical upwards, the force balances the weight the acceleration is zero

      F = W

      q v B = m g

Let's calculate the speed

      v = m g / (q B)

      v = 1,673 10⁻²⁷ 9.8 / (1.6 10⁻¹⁹ 2.5 10⁻⁵)

       v = 4.10 10⁻³ m / s

7 0
4 years ago
Why do scientists believe that light is made of waves?
skelet666 [1.2K]

Answer:

Scientists believe that light is made of waves because experiments have shown that, based on Huygens's principle, waves have the ability to bend and change direction.

Explanation:

4 0
3 years ago
Is it possible to have motion in the absence of a net force?
Vsevolod [243]

Answer:

It is impossible...

Explanation:

Under no circumstances this is possible because of the Newton’s 1st law of motion that states that a body shall continue its motion forever except the net fore is zero. When two opposing forces contract each other, they cancel out the action of each other and ultimately the net force become zero. If one body has a slightly more or less force then the net force will not be zero and the net magnitude of force will have a direction of motion.

8 0
4 years ago
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