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Question

An unknown particle is measured to have a negative charge and a speed of $2.24 \times 10^{8} \mathrm{m} / \mathrm{s}$. Its momentum is determined to be $3.07 \times 10^{-22} \mathrm{kg} \cdot \mathrm{m} / \mathrm{s}$. Identify the particle by finding its rest mass.

Solution

VerifiedAnswered 2 years ago

Answered 2 years ago

Step 1

1 of 6**Knowns:**
The unknown particle has a negative charge.
Particle speed: $v = \mathrm{2.24 \times 10^{8} \tfrac{m}{s}}$
Momentum of the particle: $p = \mathrm{ 3.07 \times 10^{-22} kg \cdot \tfrac{m}{s}}$

**Unknowns:**
The rest mass and the identity of the particle.

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