Understanding key ideas
9. if two charges attract each other,
a. both charges must be positive.
b. both charges must be negative.
c. the charges must be different.
d. the charges must be the same.
612
chapter 17
electricity

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.

What is the magnitude of the gravitational force acting on the earth due to the sun?