Two bar magnets are held close together. when they are released, they move toward one another. which best describes the original placement of the magnets?
1)the magnets are placed end to end with the north pole of each pointing toward the other.
2)the magnets are placed end to end with the south pole of each pointing toward the other.
3)the magnets are placed side by side with the like poles of each magnet near the other.
4)the magnets are placed side by side with the opposite poles of each magnet near the other.

The integral design hub incorporates thento the bearing unit. n a. cv joint n b. mounting carrier n c. brake rotor n d tie rod end

Which notation is used to represent an alpha particle? a. b. c. d.

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i. e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i. e. include the distance traveled to the first encounter)