Consider this situation: a baseball player dives head-first into second base and slows down while sliding on the infield dirt.

of the forces listed, identify which act upon the player. can be more then one answer
a. normal force
b. gravity force
c. applied force
d. friction force
e. tension force
f. air resistance force

When objects are charged by they do not need to touch each other. a. friction b. induction c. conduction d. all of these

Apositive rod is placed to the left of sphere a, and the spheres are separated. which best describes the spheres? sphere a is negative and sphere b is positive because protons from sphere a are attracted to the rod and move to sphere b. sphere a is negative and sphere b is positive because electrons from sphere b are attracted to the rod and move to sphere a. sphere a is positive and sphere b is negative because electrons from the rod move to sphere b and protons then move to sphere a. sphere a is positive and sphere b is negative because protons move from sphere b to the rod and also to sphere a.

How have the competing explanations' experiments on atoms affected the development of the atomic model?