The distance between two asteroids is $1600 \mathrm {~km}$. How much time does it take for a light signal to go from one asteroid to the other? $\left( c = 3.0 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } \right)$
A) $5.3 \mathrm {~ms}$
B) $19 \mathrm {~ms}$
C) $4.5 \mathrm {~ms}$
D) $19 \mu \mathrm { s }$
E) $13 \mathrm {~ms}$

Question

Quizplus · Accepted Answer

To find the time it takes for light to travel between the asteroids, use the formula $t = \frac{d}{c}$, where $d = 1600 \, \text{km} = 1.6 \times 10^6 \, \text{m}$ and $c = 3.0 \times 10^8 \, \text{m/s}$. Thus, $t = \frac{1.6 \times 10^6 \, \text{m}}{3.0 \times 10^8 \, \text{m/s}} = 5.33 \times 10^{-3} \, \text{s} = 5.3 \, \text{ms}$.

The Distance Between Two Asteroids Is 1600 km1600 \mathrm {~km}1600 km How Much Time Does It Take for a Light

The Distance Between Two Asteroids Is $1600 \mathrm {~km}$ How Much Time Does It Take for a Light