Preview - Modeling Electrostatics Using Netlogo

Part D: Equations

Use the data that you have collected to write the equations of proportionality for force and electric field in the blanks below using Q, q, and r.

Questions

Please answer the questions below.

It is fortunate for us that physics allows us to formulate relationships between variables (equations) given a moderately low number of data points. Insert the values in the table below that would satisfy the equation solving for Electrostatic Force using your previous results. k is a constant to make the relationship an equality.

It is fortunate for us that physics allows us to formulate relationships between variables (equations) given a moderately low number of data points. Insert the values in the table below that would satisfy the equation solving for Electric Field using your previous results. k is a constant to make the relationship an equality.

There is also a way to reason through the equations when knowing just the factor of change. For instance, if you double the charge, q, you just tested, can you predict the effect on force by reasoning through the equation you've found and determining what would happen if a doubling occurs, or a tripling, or a quadrupling? In other words, could you tell me what factor the force will change by given you are going to double the charge in the field? Make a prediction below by picking a factor by which the force, Fe, on charge, q, will change when the magnitude of the charge, q, is doubled.

2 to a power of 2
2 to a power of 1
2 to a power of 0.5
2 to a power of 0
2 to a power of -0.5
2 to a power of -1
2 to a power of -2

Make a prediction below by picking a factor by which the force, Fe, on charge, q, will change when the magnitude of the source charge, Q, is doubled.

2 to a power of 2
2 to a power of 1
2 to a power of 0.5
2 to a power of 0
2 to a power of -0.5
2 to a power of -1
2 to a power of -2

Make a prediction below by picking a factor by which the force, Fe, on charge, q, will change when the distance, r, between charges, q and Q, is doubled.

2 to a power of 2
2 to a power of 1
2 to a power of 0.5
2 to a power of 0
2 to a power of -0.5
2 to a power of -1
2 to a power of -2

Make a prediction below by picking a factor by which the electric field, E, at the location of charge, q, will change when the magnitude of the charge, q, is doubled.

2 to a power of 2
2 to a power of 1
2 to a power of 0.5
2 to a power of 0
2 to a power of -0.5
2 to a power of -1
2 to a power of -2

Make a prediction below by picking a factor by which the electric field, E, at the location of charge, q, will change when the magnitude of the source charge, Q, is doubled.

2 to a power of 2
2 to a power of 1
2 to a power of 0.5
2 to a power of 0
2 to a power of -0.5
2 to a power of -1
2 to a power of -2

Make a prediction below by picking a factor by which the electric field, E, at the location of charge, q, will change when the distance, r, from the source charge, Q, is doubled.

2 to a power of 2
2 to a power of 1
2 to a power of 0.5
2 to a power of 0
2 to a power of -0.5
2 to a power of -1
2 to a power of -2

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.