n a few sentences, describe how magnetic force is defined. We've lear it the right hand rule in class. Determine the direction of force for a cha oving in a uniform magnetic field in the positive +î direction with velo

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### Problem 1: Understanding Magnetic Force

**Question:**
In a few sentences, describe how magnetic force is defined. We’ve learned about the right-hand rule in class. Determine the direction of force for a charge \( q_0 \) moving in a uniform magnetic field in the positive \( +\hat{i} \) direction with velocity \( \mathbf{v} = 2\hat{j} - \hat{k} \).

**Answer:**
Magnetic force on a moving charge is defined by the Lorentz force equation: \( \mathbf{F} = q_0 (\mathbf{v} \times \mathbf{B}) \), where \( \mathbf{F} \) is the magnetic force, \( q_0 \) is the charge, \( \mathbf{v} \) is the velocity of the charge, and \( \mathbf{B} \) is the magnetic field. The right-hand rule helps to determine the direction of the magnetic force: point your thumb in the direction of the velocity \( \mathbf{v} \) of the positive charge, your fingers in the direction of the magnetic field \( \mathbf{B} \), and the force \( \mathbf{F} \) comes out of your palm.

Given:
- Magnetic field \( \mathbf{B} \) in the \( +\hat{i} \) direction: \( \mathbf{B} = \hat{i} \)
- Velocity \( \mathbf{v} = 2\hat{j} - \hat{k} \)

Using the cross product for the direction of the force:
\[ \mathbf{F} = q_0 \left( (2\hat{j}) \times (\hat{i}) + (-\hat{k}) \times (\hat{i}) \right) \]

Calculate each cross product:
\[ \hat{j} \times \hat{i} = -\hat{k} \]
\[ -\hat{k} \times \hat{i} = -\hat{j} \]

So,
\[ \mathbf{F} = q_0 (2(-\hat{k}) + (-\hat{j})) \]
\[ \mathbf{F} = -2q_0 \hat{k} - q_0 \hat{j} \]

Thus, the magnetic force \( \mathbf{F} \) is in the direction \(-2\hat{k} - \
Transcribed Image Text:### Problem 1: Understanding Magnetic Force **Question:** In a few sentences, describe how magnetic force is defined. We’ve learned about the right-hand rule in class. Determine the direction of force for a charge \( q_0 \) moving in a uniform magnetic field in the positive \( +\hat{i} \) direction with velocity \( \mathbf{v} = 2\hat{j} - \hat{k} \). **Answer:** Magnetic force on a moving charge is defined by the Lorentz force equation: \( \mathbf{F} = q_0 (\mathbf{v} \times \mathbf{B}) \), where \( \mathbf{F} \) is the magnetic force, \( q_0 \) is the charge, \( \mathbf{v} \) is the velocity of the charge, and \( \mathbf{B} \) is the magnetic field. The right-hand rule helps to determine the direction of the magnetic force: point your thumb in the direction of the velocity \( \mathbf{v} \) of the positive charge, your fingers in the direction of the magnetic field \( \mathbf{B} \), and the force \( \mathbf{F} \) comes out of your palm. Given: - Magnetic field \( \mathbf{B} \) in the \( +\hat{i} \) direction: \( \mathbf{B} = \hat{i} \) - Velocity \( \mathbf{v} = 2\hat{j} - \hat{k} \) Using the cross product for the direction of the force: \[ \mathbf{F} = q_0 \left( (2\hat{j}) \times (\hat{i}) + (-\hat{k}) \times (\hat{i}) \right) \] Calculate each cross product: \[ \hat{j} \times \hat{i} = -\hat{k} \] \[ -\hat{k} \times \hat{i} = -\hat{j} \] So, \[ \mathbf{F} = q_0 (2(-\hat{k}) + (-\hat{j})) \] \[ \mathbf{F} = -2q_0 \hat{k} - q_0 \hat{j} \] Thus, the magnetic force \( \mathbf{F} \) is in the direction \(-2\hat{k} - \
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