1. Match each definition with the correct term. (Level 2) Definitions

1. material through which electric current can flow

2. continuous flow of electric charges

3. device that points toward a north magnetic pole

4. magnetism produced by electric current
Terms
a. electromagnetism
b, compass
c. electric current
d. electric conductor

Who was the first scientist to measure speed as distance over time?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.