Table of Contents
- 1 How do protons and electrons differ in their electrical charge?
- 2 Why does the weaker force of gravity dominate over electrical forces for astronomical objects 1 point?
- 3 What forces between charges are enormous in comparison to what forces?
- 4 How is an electron different from a proton?
- 5 How are gravity and electromagnetic force similar?
- 6 How can electric potential be high when electrical potential energy is relatively low?
How do protons and electrons differ in their electrical charge?
Protons have a positive charge. Electrons have a negative charge. The charge on the proton and electron are exactly the same size but opposite.
Why does the weaker force of gravity dominate over electrical forces for astronomical objects 1 point?
Gravity is the dominant force for astronomical objects (planets, stars, galaxies, etc.) because gravity always attracts. Most objects tend to have equal numbers of positive and negative charges, so that the attractive and repulsive electrical forces tend to cancel each other out.
How do like charges behave What about unlike charges?
Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.
What forces between charges are enormous in comparison to what forces?
electrical forces between charges are enormous relative to gravitational forces.
How is an electron different from a proton?
Proton resides in the nucleus of the atom while electrons revolve around the fixed orbits known as shells. Electrons are negatively charged species while protons are positively charged entities.
How do forces between electric charges differ from forces between masses?
The force equations are similar, so the behavior of interacting masses is similar to that of interacting charges. The main difference is that gravitational forces are always attractive, while electrostatic forces can be attractive or repulsive. Charge plays the same role for electrostatics that mass plays for gravity.
How are gravity and electromagnetic force similar?
Because they both have mass, the two protons exert gravitational attraction on each other. Because they both have a positive electric charge, they both exert electromagnetic repulsion on each other. Also, they both have internal “color” charge and thus exert attraction via the strong nuclear force.
How can electric potential be high when electrical potential energy is relatively low?
Electric potential can be high when electrical potential energy is relatively low if the charge is low as well. It is correct to say that an object with twice the electric potential of another has twice the electrical potential energy only if the charges are the same.