A particle with charge `6.40 xx 10^(-19) C ` travels in a circular orbit with radius 4.68 mm due to the force exerted on it by a magnetic field of magnitude 1.65 T and perpendicular to the orbit.
a. What is the magnitude of the linear momentum `vec P` of the particle?
b. What is the magnitude of the angular momentum `vec L` of the particle?

Explanation

To solve the problem step-by-step, we will break it down into two parts as per the question.

### Part (a): Magnitude of Linear Momentum \( \vec{P} \)

1. **Understand the relationship between magnetic force and centripetal force**:
The magnetic force acting on the charged particle provides the necessary centripetal force to keep it in circular motion. The magnetic force \( F_B \) is given by:
\[
F_B = Q \cdot v \cdot B \cdot \sin(\theta)
...