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ipn [44]
4 years ago
10

An electrically neutral atom has 11 protons. How many electrons will it have orbiting around it’s nucleus?

Physics
1 answer:
Korolek [52]4 years ago
4 0

Answer: 11 electrons.

Explanation:

Atoms in their neural state, that is, uncharged or non ionized state, always have the same number of protons and electrons.

When they ionized, they will either gain or lose electron or electrons which will eventually make them either positively charged or negatively charged.

Given that an electrically neutral atom has 11 protons. It will definitely has 11 electrons orbiting around it’s nucleus

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A train rolls to a stop along a horizontal track without the conductor applying the brakes. What answer choice BEST explains why
Naya [18.7K]

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B

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4 0
4 years ago
Jenna can run 9 km in 1 hour. If she runs at that speed for 30 minutes, how far will she go? *
crimeas [40]

Answer:

4.5 km / 450 m

Explanation:

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heart plzz and brainliest answer as well

5 0
4 years ago
The flux through the coils of a solenoid changes from 2.57.10-5 Wb to 9.44.10-5 Wb in 0.0154 s. If 4.08 V of EMF is generated, h
Vinil7 [7]

Hello!

We can use Faraday's Law of Electromagnetic Induction to solve.

\epsilon = -N \frac{d\Phi_B}{dt}

ε = Induced emf (4.08 V)
N = Number of loops (?)

\Phi_B = Magnetic Flux (Wb)
t = time (s)

**Note: The negative sign can be disregarded for this situation. The sign simply shows how the induced emf OPPOSES the current.

Now, we know that \frac{d\Phi_B}{dt} is analogous to the change in magnetic flux over change in time, or \frac{\Delta \Phi_B}{\Delta t}, so:
\epsilon = N \frac{\Delta \Phi_B}{\Delta t}\\\\\epsilon = N \frac{\Phi_{Bf} - \Phi_{Bi}}{\Delta t}

Rearrange the equation to solve for 'N'.

N = \frac{\epsilon}{ \frac{\Phi_{Bf} - \Phi_{Bi}}{\Delta t}}

Plug in the given values to solve.

N = \frac{4.08}{ \frac{9.44*10^{-5} - 2.57*10^{-5}}{0.0154}}  = 914.585 = \boxed{915 \text{ coils}}

**Rounding up because we cannot have a part of a loop.

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2 years ago
All of the following are ways in which sedimentary rocks form EXCEPT
Anna71 [15]

Except A. Lava cooling

6 0
3 years ago
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