Why Ignore the Magnetic Field in a Mass Spectrometer?

In summary, the magnetic field is important for protecting Earth from solar radiation and cosmic rays, affecting our daily lives through various technological and biological processes, and is generated by the movement of molten iron in the Earth's outer core. While scientists do not ignore the magnetic field, it can be a complex and changing phenomenon to study. If the magnetic field were to weaken or disappear, it could have significant impacts on Earth's atmosphere, climate, and technology, although life on the planet has persisted through previous changes in the magnetic field.
  • #1
darksyesider
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0

Homework Statement



Consider a simple mass spectrometer. The magnitude of the electric field between the plates of the velocity selector is 2 500 V/m and the magnetic field in both the velocity selector and the deflection chamber has a magnitude of 0.035 T. Calculate the radius of the path for a singly charged ion with mass m=2.18E-26.




Homework Equations




qE=1/2 mv^2

F = qVxB

The Attempt at a Solution



Solution attached.

Why is the magnetic field ignored for the velocity selector portion??
 

Attachments

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  • #2
I don't understand what you mean by ignored as the field strength is used in both calculations.
 

FAQ: Why Ignore the Magnetic Field in a Mass Spectrometer?

1. Why is the magnetic field important?

The magnetic field is important because it helps protect Earth from harmful solar radiation and cosmic rays, it plays a crucial role in the functioning of the Earth's climate and weather systems, and it is essential for many technological applications such as compasses, electric motors, and generators.

2. How does the magnetic field affect our daily lives?

The magnetic field affects our daily lives in ways we may not even realize. It helps birds and other animals navigate, it allows us to use technology such as cell phones and computers, and it even plays a role in the production of some foods and medicines.

3. Why do we sometimes ignore the magnetic field?

Scientists do not ignore the magnetic field, but rather, they study it extensively. However, there are times when the magnetic field may not be the focus of a particular study or experiment, and other factors may take precedence. Additionally, the magnetic field is constantly changing and can be influenced by various factors, making it a complex and sometimes difficult phenomenon to study.

4. How is the magnetic field generated?

The magnetic field is generated by the movement of molten iron in the Earth's outer core. This creates a dynamo effect, similar to a giant electric generator, which produces the Earth's magnetic field. Other planets and celestial bodies also have magnetic fields, but the exact mechanisms for their generation may differ.

5. What happens if the magnetic field weakens or disappears?

If the magnetic field were to significantly weaken or disappear, Earth's atmosphere would be more vulnerable to solar winds, leading to increased exposure to harmful radiation and potential disruptions to technology and communication systems. It could also affect the planet's climate and weather patterns. However, scientists believe that the magnetic field has weakened and even reversed several times throughout Earth's history, and life on the planet has persisted.

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