18-20 only Compasses18. Why does the needle on the compass turn as it moves around the bar magnet?Ybod19. How does the Earth's magnetic Field affect a compass needle?20. Describe what you think would happen if a bar magnet was hung by a string and able to turn freely.# 21-30 fill in the blank with one of the following: gravitational, magnetic, electrostatic21. An apple falling down from a tree is one of the best examples ofnon contact force.22. Iron pins attracted in the presence of a magnet bar isnon contact force.23. Falling of raindrops on earth is also an example ofnon contact force.24. The charging of the hair after a balloon is rubbed on a person's head isnorcontact force.

Compasses are a navigation tool that helps to find directions on the earth using a magnetic field. A…

Compasses 18. Why does the needle on the compass turn as it moves around the bar magnet? 19. How does the Earth's magnetic Field affect a compass needle? 20. Describe what you think would happen if a bar magnet was hung by a string and able to turn freely.

Compasses 18. Why does the needle on the compass turn as it moves around the bar magnet? 19. How does the Earth's magnetic Field affect a compass needle? 20. Describe what you think would happen if a bar magnet was hung by a string and able to turn freely.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter2: Life, Chemistry, And Water

Section: Chapter Questions

Problem 1TYK: Which of the following statements about the mass number of an atom is incorrect? a. It has a unit...

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Question

18-20 only

Compasses
18. Why does the needle on the compass turn as it moves around the bar magnet?
Ybod
19. How does the Earth's magnetic Field affect a compass needle?
20. Describe what you think would happen if a bar magnet was hung by a string and able to turn freely.
# 21-30 fill in the blank with one of the following: gravitational, magnetic, electrostatic
21. An apple falling down from a tree is one of the best examples of
non contact force.
22. Iron pins attracted in the presence of a magnet bar is
non contact force.
23. Falling of raindrops on earth is also an example of
non contact force.
24. The charging of the hair after a balloon is rubbed on a person's head is
nor
contact force.

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