Question

A light year is the distance that light can travel in one year.

1 light year = 9,460,000,000,000 km.

(a) Express one light year in scientific notation.

(b) The average distance between Earth and Sun is 1.496 x 108 km. Is the distance between Earth and

the Sun greater than, less than or equal to one light year?​

Answer 1

Answer:

a)9.46×10^12 km is the scientific form

Answer 2

Given: 1 light year = 9,460,000,000,000 km.

To find:

(a) 1 light year in scientific notation

(b) to compare the distance of one light year and average distance of earth and sun.

Step-by-step explanation:

Step 1 of 2

(a) The scientific notation of 1 light year:

1 light year = 9,460,000,000,000 km.

The scientific notation of $123=1.23*10^{2}$

So, 9,460,000,000,000 km can be written as $9.46*10^{12} km.$

Step 2 of 2

(b) Average distance of earth and sun is $1.496*10^{8}$ km.

Light year $9.46*10^{12} km.$

$1.496*10^{8} < 9.46*10^{12}$

Distance between Earth and the Sun is less than one light year.