What is the effect of doubling the distance between two charges in Coulomb's Law?
The electric force decreases by a factor of four.
What is the effect of a net force acting on an object?
The object accelerates in the direction of the net force.
What are the key differences between inertial mass and gravitational mass?
Inertial Mass: Mass that is accelerated (mass in motion). Gravitational Mass: Mass based on an object’s weight (mass being pulled by the gravitational field).
Compare and contrast gravity and electric force.
Gravity: Always attractive, force = $G rac{m_1 m_2}{r^2}$. Electric Force: Attractive or repulsive, force = $k rac{|q_1 q_2|}{r^2}$. Both are inverse square laws.
Define Newton's First Law.
An object at rest stays at rest, and an object in motion stays in motion with the same velocity unless acted upon by a net external force.
Define Inertia.
The tendency of an object to resist changes in its state of motion.
Define Newton's Second Law.
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Define Newton's Third Law.
For every action, there is an equal and opposite reaction.
Define Coulomb's Law.
The electric force between two point charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Define electric force.
The force of attraction or repulsion between two charged objects.
