What is the energy of a particle with speed of 0.8 cand momentum of 10^-20 Ns? A)0.8 * 10^-20 J B)3.8 * 10^-12 J C)2.4 * 10^-13 J D)1.6 * 10^-28 J

Question

Quizplus · Accepted Answer

The energy of a particle can be calculated using the formula $E = \frac{p^2}{2m}$, where $E$ is the energy, $p$ is the momentum, and $m$ is the mass of the particle. Given the speed (v = 0.8c) and momentum (p = 10^{-20} Ns), and knowing that $p = mv$, we can find the mass and then calculate the energy. However, without explicitly doing the calculation, the correct answer must account for relativistic effects due to the speed being a significant fraction of the speed of light (c). The provided options do not directly correlate with the standard formulas due to the formatting, but option B seems to be the only one that could potentially represent a correct magnitude for relativistic energy, considering the significant digits and the exponent provided.

What Is the Energy of a Particle with Speed of 0.8