Magnetism Question Can't figure it out

In summary, the Earth's magnetic field in a certain region is 5.5 x 10-5 T and directed north at an angle of 40° below the horizontal. A charged bullet is fired north at an angle of 19° above the horizontal with a speed of 700 m/s. The magnetic force on the bullet is 3.9 x 10-10 N, directed due east. Using the equation F=qvBsinθ, the bullet's electric charge can be determined to be 3.1 x 10-8 C with an angle of 59° between its velocity and the magnetic field.
  • #1
harrism1
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Homework Statement



In a certain region, the Earth's magnetic field has a magnitude of 5.5 x 10-5 T and is directed north at an angle of 40° below the horizontal. An electrically charged bullet is fired north and 19° above the horizontal, with a speed of 700 m/s. The magnetic force on the bullet is 3.9 x 10-10 N, directed due east. Determine the bullet's electric charge, including its algebraic sign (+ or -).

Homework Equations



F=qvBsintheta

The Attempt at a Solution



3.9E-10N= q* 700m/s(V)*5.5E-5T (B)*sin19
=3.1E-8N
 
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  • #2
Angle between v and B is ...?
 
  • #3
59degrees?
 
  • #4
Substitute this value in the problem instead of 19 degrees.
 

1. What is magnetism?

Magnetism is a physical phenomenon that occurs when certain materials produce a magnetic field. This magnetic field can attract or repel other objects with magnetic properties.

2. How does magnetism work?

Magnetism is caused by the movement of electrons within a material. These electrons align in the same direction, creating a magnetic field. This field can then interact with other magnetic fields, causing objects to be attracted or repelled.

3. What are the different types of magnets?

There are three main types of magnets: permanent magnets, temporary magnets, and electromagnets. Permanent magnets, like those found in refrigerator magnets, retain their magnetic properties without an external source. Temporary magnets, such as paperclips, can be magnetized by a nearby permanent magnet. Electromagnets are created by running an electric current through a wire, producing a magnetic field.

4. How is magnetism used in everyday life?

Magnetism has many practical applications in our daily lives. Some common uses include in generators and motors, credit cards, speakers, and medical imaging devices. Magnetism is also used in industrial processes, such as separating metals and creating magnetic levitation trains.

5. What are the health effects of magnetism?

There is no evidence that exposure to everyday magnetic fields has any negative health effects. However, exposure to extremely strong magnetic fields, such as those in MRI machines, can cause dizziness, nausea, and other temporary symptoms. It is always important to follow safety guidelines when using or being around strong magnetic fields.

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