Question

The distance (in m) that light will travel in 4 minutes is?A. 7.2 E10B. 3E8C. 1.2E9D. 6.8E11

Answer 1

ANSWER

$A)7.2E10$

EXPLANATION

To find the distance that light travels in 4 minutes, apply the relationship between distance and time:

$d=v\cdot t$

where v = velocity; t = time

The velocity of light is:

$3\cdot10^8m\/s$

Also, converting the given time to seconds:

$\begin{gathered} 1\min =60s \\ 4\min =60\cdot4=240s \end{gathered}$

Therefore, the distance traveled is:

$\begin{gathered} d=3\cdot10^8\cdot240 \\ d=720\cdot10^8 \\ d=7.2\cdot10^{10}m\Rightarrow7.2E10 \end{gathered}$