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Fed [463]
3 years ago
15

HELP PLSSSSSSSSSS lithium has three protons. which model shows a neutral atom of lithium?

Physics
2 answers:
wolverine [178]3 years ago
5 0

Answer:

B

Explanation:

the 3 electrons makes it neutral

bekas [8.4K]3 years ago
5 0

Answer:

B

Explanation:

For neutral atoms, the number of protons equal the number of electrons.

Thus, a neutral atom of lithium will have 3 electrons outside the nucleus.

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by how many times occur in the force of attraction between two bodies change when the distance between then is reduced to one th
xenn [34]

Answer:

<em>The force is now 9 times the original force</em>

Explanation:

<u>Coulomb's Law </u>

The electrostatic force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

Coulomb's formula is:

\displaystyle F=k\frac{q_1q_2}{d^2}

Where:

k=9\cdot 10^9\ N.m^2/c^2

q1, q2 = the particles' charge

d= The distance between the particles

Suppose the distance is reduced to d'=d/3, the new force F' is:

\displaystyle F'=k\frac{q_1q_2}{\left(\frac{d}{3}\right)^2}

\displaystyle F'=k\frac{q_1q_2}{\frac{d^2}{9}}

\displaystyle F'=9k\frac{q_1q_2}{d^2}

\displaystyle F'=9F

The force is now 9 times the original force

8 0
3 years ago
Please help At which point is the potential energy the greatest ?​
4vir4ik [10]

Answer: 3

Explanation:

5 0
2 years ago
Calculate the total surface area of cylinder whose base radius 2cm and height is 10cm​
murzikaleks [220]

Answer:

Answer :-  150.79cm2

Explanation:

                                               A=2πrh+2πr2

                                                 2·π·2·10+2·π·22

                                                    150.79645cm²

5 0
3 years ago
Read 2 more answers
Kamir and Alexis are studying the properties of water. They conducted a variety of experiments to determine its physical and che
lawyer [7]

ITS D hope this helps

5 0
4 years ago
A 513 g ball strikes a wall at 14.7 m/s and rebounds at 11.3 m/s. The ball is in contact with the wall for 0.038 s. What is the
Natasha_Volkova [10]

consider the velocity of the ball towards the wall as negative and away from the wall as positive.

m = mass of the ball = 513 g = 0.513 kg

v₀ =  initial velocity of the ball towards the wall before collision = - 14.7 m/s

v = final velocity of the ball away from the wall after collision = 11.3 m/s

t = time of contact with the wall = 0.038 sec

F = average force acting on the ball

using impulse-change in momentum equation , average force is given as

F = m (v - v₀)/t

inserting the values

F = (0.513) (11.3 - (- 14.7))/0.038

F = 351 N


5 0
3 years ago
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