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3 years ago

Research has shown that the electrons orbit the nucleus in circular motions as shown on the classic Bohr model.

Physics

2 answers:

Stels [109]3 years ago

6 0

Research has shown that the electrons orbit the nucleus in circular motions as shown on the classic Bohr model. FALSE

astraxan [27]3 years ago

4 0

False. The Bohr Model is fundamentally incorrect. Electrons do not travel along specific paths.

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A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end

Dominik [7]

Answer:

wavelength = 0.8989 m

Explanation:

Given data:

weight of wire is 8.25 g

length of wire is 65 cm

speed of sound in room is 344 m/s

time of returning of pulse is 7.84 ms

There are three time period

Time period $= \frac{7.84\times 10^{-3}}{3} = 2.6133\times 10^{-3} s$

$frequency = \frac{1}{T}$

$=\frac{ 1}{2.6133\times 10^{-3})} = 382.6579 Hz$

velocity = wavelength × frequency

wavelength $= \frac{velocity}{frequency}$

$= \frac{344}{382.6579}$

wavelength = 0.8989 m

6 0

3 years ago

the atomic number of krypton (kr) is 36, and its mass number is 84. how many neutrons does it have? 18 36 48 72

tino4ka555 [31]

By definition, we have that the number of neutrons is given by:

# neutrons = atomic mass - # protons

We know that the atomic mass is equal to 84.

We know the atomic number of Krypton is equal to 36. This means that the Krypton has 36 protons and 36 electrons.

Therefore, substituting values we have:

# neutrons = 84 - 36

# neutrons = 48

Answer:

The Krypton has 48 neutrons

5 0

3 years ago

Read 2 more answers

What are two ways of changing PE?

Anna35 [415]

Potential energy is simply energy that can be but isn't yet
it can also be changed by putting it into motion or setting it off by using force or enacting gravity by dropping it.

6 0

3 years ago

From Gauss's law, the electric field set up by a uniform line of charge is given by the following expression where is a unit vec

Evgesh-ka [11]

Answer:

$\Delta V=\lambda *ln(r_{2}/r_{1}) /\ (2\pi*\epsilon_{o})$

Explanation:

Using the Gauss Law, we obtain the electric Field for a uniform large line of charge:

$2\pi r L*E=\lambda *L/\epsilon_{o}$

$E=\lambda /\(2 \pi* r *\epsilon_{o})$

We calculate the potential difference from the electric field:

$\Delta V=-\int\limits^{r_{1}}_{r_{2}} E \, dr =-\int\limits^{r_{1}}_{r_{2}} \lambda dr/ (2\pi*r*\epsilon_{o})=\lambda *ln(r_{2}/r_{1}) /\ (2\pi*\epsilon_{o})$

5 0

4 years ago

When light reflects off an object, what is the relation between the angle of incidence and the angle of reflection?

Mashutka [201]

Angle of incidence is the angle when the light strikes an object while angle of reflection is the angle produced when the light strikes off/reflects from the object.

The relation between these two is that both the angles are equal.

The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

Hope this helps!

7 0

3 years ago