Question 1

Magnetic compasses reportedly were first used for navigation by

Accepted Answer

A)  Aristotle.
B)  Australian aborigines.
C)  Chinese sailors.
D)  none of the above

Question 2

Magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. The amount of force that magnet A exerts on magnet B is

Accepted Answer

A)  at or about 50 N.
B)  exactly 100 N.
C)  need more information

Question 3

A beam of electrons can pass through a magnetic field without being deflected if the direction of the beam is

Accepted Answer

A)  parallel to the field lines.
B)  perpendicular to the field lines.
C)  none of these

Question 4

Over geologic history the Earth's magnetic field

Accepted Answer

A)  has been relatively stable.
B)  has increased in strength exponentially.
C)  has reversed direction many times.
D)  is unknown.

Question 5

Biomagnetism has been detected in

Accepted Answer

A)  bacteria.
B)  pigeons.
C)  wasps.
D)  humans.
E)  all of the above

Exam 24: Magnetism

A beam of electrons can pass through a magnetic field without being deflected if the direction of the beam is

Correct Answer
verified

Biomagnetism has been detected in

Correct Answer
verified

Magnetic compasses reportedly were first used for navigation by

Correct Answer
verified

Over geologic history the Earth's magnetic field

Correct Answer
verified

Magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. The amount of force that magnet A exerts on magnet B is

Correct Answer
verified

Exam 24: Magnetism

A beam of electrons can pass through a magnetic field without being deflected if the direction of the beam is

Correct AnswerverifiedShow Answer

Biomagnetism has been detected in

Correct AnswerverifiedShow Answer

Magnetic compasses reportedly were first used for navigation by

Correct AnswerverifiedShow Answer

Over geologic history the Earth's magnetic field

Correct AnswerverifiedShow Answer

Magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. The amount of force that magnet A exerts on magnet B is

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified