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3 years ago

How many electrons are in the outer energy level of an atom of carbon

Physics

1 answer:

xz_007 [3.2K]3 years ago

8 0

Answer:

4 electrons

Explanation:

Carbon, is the group 14 element, with four electrons in its outer shell. Carbon always shares electrons to reach a complete valence shell, making bonds with other atoms.

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Q)How is a conductor different from an insulator. A)A Conductor contains free electrons. B)A conductor contains free protons. C)

I am Lyosha [343]

A conductor contains electrons that are bound so weakly to their atoms
that they can be ripped away with a small voltage, and sent scurrying in
the direction of the higher potential.

5 0

3 years ago

Read 2 more answers

A 1-kg book is at rest on a desk. Determine the force the desk exerts on the book<br>

Katena32 [7]

<h3>Answer:</h3>

$\displaystyle F_n = 9.8 \ N$

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Physics</u>

<u>Forces</u>

SI Unit: Newtons N

Free Body Diagrams

Gravitational Force: $\displaystyle F_g = mg$

m is mass (in kg)
g is Earth's gravity (<em>9.8 m/s²</em>)

Normal Force: $\displaystyle F_n$

Newton's Law of Motions

Newton's 1st Law of Motion: An object at rest remains at rest and an object in motion stays in motion
Newton's 2nd Law of Motion: F = ma (Force is equal to [constant] mass times acceleration)
Newton's 3rd Law of Motion: For every action, there is an equal and opposite reaction

<h3>Explanation:</h3>

<u>Step 1: Define</u>

1 kg book at <em>rest</em>

<em>See Attachment</em>

<em>Draw a free body diagram to label the forces acting upon the book. We see that we would have gravitational force from Earth pointing downwards and normal force from the surface of the desk pointing upwards.</em>

<em>Since the book is not moving, we know that ∑F = 0 (sum of forces equal to 0).</em>

<u>Step 4: Find Normal Force</u>

Define Forces [Newton's Law of Motions]: $\displaystyle \sum F = 0$
[Newton's Law of Motions] Substitute in forces: $\displaystyle F_g - F_n = 0$
[Newton's Law of Motions] [Addition Property of Equality] Isolate $\displaystyle F_n$ : $\displaystyle F_g = F_n$
[Newton's Law of Motions] Substitute in $\displaystyle F_g$ : $\displaystyle mg = F_n$
[Newton's Law of Motions] Rewrite: $\displaystyle F_n = mg$
[Newton's Law of Motions] Substitute in variables: $\displaystyle F_n = (1 \ kg)(9.8 \ \frac{m}{s^2})$
[Newton's Law of Motions] Multiply: $\displaystyle F_n = 9.8 \ N$

7 0

2 years ago

During a hard sneeze, your eyes might shut for 0.50 s. If you are driving a car at 90 km/h during such a sneeze, how far does th

Angelina_Jolie [31]

Answer:

12.5 m.

Explanation:

Speed: This can be defined as the rate of change of distance. The S.I unit of speed is m/s. Mathematically it can be expressed as,

Speed = distance/time

S = d/t......................... Equation 1

d = S×t ...................... Equation 2.

Where S = speed of the car, d = distance, t = time taken to shut the eye during sneezing

Given: S = 90 km/h, t = 0.50 s.

Conversion: 90 km/h ⇒ m/s = 90(1000/3600) = 25 m/s.

S = 25 m/s.

Substitute into equation 2.

d = 25×0.50

d = 12.5 m.

Hence the car will move 12.5 m during that time

5 0

3 years ago

A cube whose sides are of length = 1.8 m is placed in a uniform electric field of magnitude E = 5.8 ✕ 10^3 N/C so that the field

anyanavicka [17]

Answer:

Zero

Explanation:

Electric flux is defined as the number of electric field lines which passes through any area in the direction of area vector.

The formula for the electric flux is given by

$\phi =\overrightarrow{E}.\overrightarrow{dS}$

Here, E is the strength of electric field and dS be the area vector.

It is a scalar quantity.

According to the Gauss's theorem, the electric flux passing through any surface is equal to the $\frac{1}{\epsilon _{0}}$ times the total charge enclosed through the surface.

Here, the charge enclose is zero, so the total flux is also zero.

3 0

3 years ago

Both the electrical force and the gravitational force between two objects share which relationship?

kolbaska11 [484]

They are inversely proportional to the square of the distance.

Explanation:

The magnitude of the gravitational force between two objects is given by

$F=G\frac{m_1 m_2}{r^2}$

where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between the two objects.

The magnitude of the electrical force between two objects is given by

$F=k\frac{q_1 q_2}{r^2}$

where k is the Coulomb's constant, q1 and q2 are the charges of the two objects, and r is the distance between the two objects.

In both cases, we see that the magnitude of the force is iinversely proportional to the square of the distance, $\frac{1}{r^2}$ , so the correct option is

They are inversely proportional to the square of the distance.

7 0

2 years ago

Read 2 more answers