Drivers were tested on various driving exercises before they had been drinking. They were given alcoholic beverages of their cho
2 answers:
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Answer:
Pressure,
Explanation:
It is given that,
Mass of the woman, m = 55 kg
Diameter of the circular cross section, d = 6 mm
Radius, r = 3 mm = 0.003 m
Let P is the pressure exerted on the floor. It is equal to the force acting on woman per unit area. It is given by :
So, the pressure exerted on the floor is . Hence, this is the required solution.
Answer:
Explanation:
A point charge Q is placed at the center of a cube of side l.
We need to find the flux through one face of the cube. Let the flux is .
There are 6 faces in a cube.
According to Gauss's law, net flux is given by :
As there are 6 faces of a cube, flux through one surface is :
So, the flux through one face of the cube is .
The question is missing, however, I guess the problem is asking for the value of the force acting between the two balls.
The Coulomb force between the two balls is:
where
is the Coulomb's constant, 
is the intensity of the two charges, and 
is the distance between them.
Substituting these numbers into the equation, we get
The force is repulsive, because the charges have same sign and so they repel each other.
The Coulomb force between the two balls is:
where
Substituting these numbers into the equation, we get
The force is repulsive, because the charges have same sign and so they repel each other.