please.!PLEASe PLEASE. help me.

TRUE or FALSE

1.the north pole of a permanent magnet is attracted to a south pole

2.iron,aluminum, and nickel are all ferromagnetic materials

3.all permanent magnets are surrounded by a magnetic field

4.the direction of a magnetic field is indicated by the north pole of a compass.

5.magnets are used to amplify sound of a loudspeaker

6.magnetic field lines outside a permanent magnet originate from the north pole and end on the south pole.

7.when a permanent magnet is cut in half,one piece will be a north pole and one piece will be a south pole

8.the magnetic force on a charged particle in a magnetic field is a maximum if the particle is stationary

9.the magnitude of the magnetic force that acts on a charged particle in a magnetic field is independent of the sign of the charge

10.a charged particle is moving in a uniform,constant magnetic field.the magnetic force exerted on the particle increases the speed of the particle.

11.a proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the surface of the earth (the x-y plane).the direction of the magnetic field is towards north.

12.an electron traveling due north enters a region that contains a uniform magnetic field that points due east will be deflected down (onto the plane).

13.a proton is traveling south as it enters a region that contains a magnetic field.it is deflected downward toward the earth (the plane) if the direction of the magnetic field is westward.

14.an electron traveling horizontally enters a region where a uniform magnetic field is directed into the plane of the paper as shown.the motion of the electron once it has entered the field is upward and circular.

[x x x x x]
.--->
[x x x x x]
[x x x x x]
[x x x x x]

15.two electrons are located in a region of space where the magnetic field is zero. electron A is at rest; and electron B is moving westward with a constant velocity. A non-zero magnetic field directed eastward is then applied to the region. after the field is applied electron A will remain at rest while electron B will continue to move westward.

16.an electron is moving with a speed of 3.5x10^5 m/s along +x axis when it encounters a magnetic field of 0.60T. the direction of the magnetic field makes an angle of 60.0 degree with respect to the velocity of the electron, onthe same plane. the magnetic force on the electron is 2.9x10^-14 N, out of the plane.

17.a long,straight wire carries a 6.0-A current that is directed in the positive x direction. when a uniform magnetic field is applied perpendicular to a 3.0 m segment of the wire,the magnetic force on the segment is 0.36 N,directed in the negative Y direction. the magnitude and direction of the magnetic field 0.020 T, onto the plane.

18.a current-carrying, rectangular coil of wire is placed is placed in a magnetic field. the magnitude of the torque on the coil is not dependent to the direction of the current in loop.

A wire is bent into the shape of a circle of radius=0.10m and carries a 20.0A current in the direction shown.

20.0A
-->
CIRCLE
r
^ / ^
| ./ |

<--

19.the direction of the magnetic field at the center of the loop is onto the plane.

20.the magnitude of the field at the center of the loop is 1.3x10^4T.

So where are your answers?

i have no answers for this question.so help me please!please DAMON please help me.

Shelle or Clifford or whoever you are. No one is going to do your test for you.

To answer true or false questions about magnets and magnetic fields, we can refer to some basic principles of magnetism. Here are explanations for each statement to help you determine whether it is true or false:

1. True. The north pole of a permanent magnet is indeed attracted to a south pole of another magnet. This is due to the magnetic field lines that connect the two opposite poles, creating a force of attraction.

2. True. Iron, aluminum, and nickel are all examples of ferromagnetic materials. These materials have the ability to retain a magnetic field even after an external magnetic field is removed.

3. True. All permanent magnets create a magnetic field around them. This magnetic field is the region in which the magnetic force is exerted. It extends from the north pole to the south pole of the magnet.

4. False. The direction of a magnetic field is indicated by the north pole, not the south pole, of a compass needle. The north pole of a compass needle points towards the south pole of a magnet due to magnetic field lines.

5. False. Magnets do not amplify the sound of a loudspeaker. Loudspeakers use electrical signals to create vibrations in a diaphragm, thereby producing sound. Magnets are used in loudspeakers to help create the electrical signals that drive the vibrations.

6. True. Magnetic field lines outside a permanent magnet do indeed originate from the north pole and end on the south pole. These field lines form closed loops that represent the direction and strength of the magnetic field.

7. False. When a permanent magnet is cut in half, each resulting piece becomes a magnet with its own north and south poles. The magnet does not separate into distinct north and south pole pieces.

8. False. The magnetic force on a charged particle in a magnetic field is greatest when the particle is moving perpendicular to the field lines. If the particle is stationary (not moving), the magnetic force is zero.

9. True. The magnitude of the magnetic force acting on a charged particle in a magnetic field is independent of the sign of the charge. The force depends on the charge's velocity, the strength of the magnetic field, and the angle between the velocity and the magnetic field.

10. False. The magnetic force exerted on a charged particle in a magnetic field does not change the speed of the particle; it affects only the direction of the particle's path, causing it to move in a circular or curved path.

11. True. A proton traveling east in a region with a magnetic field directed towards the north will experience a vertically upward force away from the surface of the Earth. This deflection is due to the interaction between the magnetic field and the proton's velocity.

12. True. An electron moving due north in a region with a magnetic field pointing due east will be deflected downward once it enters the field. This is because the magnetic force acts perpendicular to both the velocity and the magnetic field, causing the electron's path to curve downward.

13. True. If a proton is traveling south and enters a region with a magnetic field directed westward, it will be deflected downward toward the Earth (in the plane of motion). The direction of deflection depends on the velocity of the particle and the magnetic field's orientation.

14. False. The motion of an electron entering a region with a uniform magnetic field directed into the plane of the paper depends on its initial velocity and the strength of the field. The electron's path will be curved, but whether it is upward or downward depends on the specific parameters of the situation.

15. False. When a non-zero magnetic field is applied, both electron A at rest and electron B moving westward will experience a force. Depending on the strength and direction of the applied field, both electrons may experience changes in their velocities and paths.

16. True. When an electron with a given velocity encounters a magnetic field at an angle, it experiences a magnetic force perpendicular to both the velocity and the field direction. The magnitude and direction of this force can be determined using the right-hand rule.

17. False. The magnitude and direction of the magnetic field can be determined using the formula F = BILsinθ, where F is the force, B is the magnetic field, I is the current, L is the length of the wire segment, and θ is the angle between the current and the magnetic field. The magnetic field in this case is 0.020 T, not onto the plane.

18. False. The torque on a current-carrying coil in a magnetic field depends on the direction of the current in the loop. If the direction of the current is reversed, the torque will also change its direction.

19. True. At the center of the loop, the direction of the magnetic field is indeed onto the plane. This is because the field lines due to each segment of the wire in the loop contribute in such a way that their sum points into the plane at the center.

20. False. The magnitude of the magnetic field at the center of the loop depends on the radius of the loop and the current flowing through it. It can be calculated using the formula B = μ₀I / (2r), where μ₀ is the permeability of free space, I is the current, and r is the radius of the loop. Without specific values for these parameters, we cannot determine the magnitude of the field.