strawberrysk8 said:Homework Statement
How many extra electrons would we have to place on Earth and moon so the electric repulsion between these bodies cancels their gravitational attraction? Assume that the numbers of extra electrons on the Earth and on the moon are in the same propotion as the radial dimensions of these bodies (6.38:1.74).
Homework Equations
The Attempt at a Solution
strawberrysk8 said:F=kqq/r^2
F=GmM/r^2
Constants: k,G,m,M,r
what is q1 and q2?
strawberrysk8 said:oh! i got it! thank you for the advice :)
The electric force is the force of attraction or repulsion between charged particles, while gravitational force is the force of attraction between any two objects with mass. Electric force is much stronger than gravitational force, but it only acts on charged particles.
Both electric and gravitational forces can cause objects to accelerate. The direction of the acceleration depends on the direction of the force and the mass of the object. Objects with opposite charges or masses will accelerate towards each other, while objects with like charges or masses will accelerate away from each other.
Yes, it is possible for electric and gravitational forces to cancel each other out. This occurs when there is an equal and opposite force acting on an object. For example, if a positively charged object and a negatively charged object are placed close together, the electric force between them will be canceled out by the gravitational force.
The strength of electric force is determined by the magnitude of the charges and the distance between them. The strength of gravitational force is determined by the masses of the objects and the distance between them. The greater the charge or mass, the stronger the force will be. The farther apart the objects are, the weaker the force will be.
Both electric and gravitational forces play important roles in the universe. Electric forces are responsible for holding atoms and molecules together, as well as for many chemical reactions. Gravitational force is responsible for the formation of planets, stars, and galaxies, and for keeping them in orbit. Without these forces, the universe as we know it would not exist.