Answer:

Explanation:
The electron is the particle that rotates around the nucleus of the atom; it has a negative electric charge equal to :

which is known as fundamental charge.
For an object containing N excess electrons, the total charge of the object is

In this problem, the number of excess electrons in the object is:

Therefore, by plugging it the numbers, we can find the value of Q, the total charge of the object:

Answer: 0.29 kN
Explanation:
We have the following data:
is the weight of the astronaut on Earth
is the free fall acceleration due gravity on Earth (directed downwards)
is the free fall acceleration due gravity on Zuton (directed downwards)
is the acceleration of the spaceship at litoff (directed upwards)
We have to find the <u>magnitude of the force</u>
the space ship exerts on the astronaut.
Firstly, we have to know weight has a direct relation with the mass and the acceleration due gravity. In the case of Earth is:
(1)
Where
is the mass of the atronaut.
Isolating
:
(2)
(3)
(4)
Now that we know the mass of the astronaut, we can find its weight on Zuton:
(5)
(6)
(7)
Then, we can calculate the force the space ship exerts on the astronaut by the following equation:
(8)
Isolating
:
(9)
(10)
(11)
Finally:
More massive attacking objects speed slows down and it transfer its some kinetic energy to less massive target objects whereas less massive target objects starts its motion
Answer:
The force is 
Explanation:
We can apply the following expression

To find the area of rectangular tent wall:

Now to find the force:



Answer:
Explanation:
electron attraction between electron and nucleus = centripetal force of the orbiting electron
In fact, Bohr model depicts the atom as a nucleus surrounded by electrons in circular orbit around it, similar to the planets around the Sun. The centripetal force that keeps the electrons in circular motion around the nucles is provided by the electrostatic force between the electrons and the nucleus.