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andrew-mc [135]
3 years ago
15

The speed of light is ×2.998108/ms . how long does it take light to travel 30.cm ? set the math up. but don't do any of it. just

leave your answer as a math expression.
Mathematics
2 answers:
Margarita [4]3 years ago
6 0
Time taken for light to travel 20 cm will be:
time=distance/speed
distance=30 cm=0.3 m
speed=2.998108 m/s
thus time taken will be:
time=0.3/2.998108=0.10006 seconds
thus the expression is:
time=0.3/2.998108
Naddik [55]3 years ago
4 0
  • time = 0.3 m / 2.998 x 10⁸ m/s
  • 1.0 x 10⁻⁹ s
<h3>Further explanation</h3>

<u>Given:</u>

The speed of light is 2.998 x 10⁸ m/s

<u>Question:</u>

How long does it take light to travel 30 cm?

Just leave your answer as a math expression.

<u>The Process:</u>

Recall \boxed{ \ 1 \ meter = 100 \ cm \ }

Let us convert cm to m for distance traveled:

\boxed{ \ 30 \ cm \times \frac{1 \ m}{100 \ cm} \rightarrow 0.3 \ m \ }

The relationship between distance, speed, and time is as follows:

\boxed{ \ distance = speed \times time \ }

Because in this case you are being asked how long or time it takes, make it the subject.

\boxed{ \ time = \frac{distance}{speed} \ }

\boxed{ \ time = \frac{0.3 \ m}{2.998 \times 10^8 \ m/s} \ }

Rounding the quotient produces:

\boxed{ \ time = 0.1 \times 10^{-8} \ s \ }

Adjust it again to fit the scientific notation.

The result is \boxed{ \ time = 1.0 \times 10^{-9} \ s \ }

As a mathematical expression, the time taken for light is

\boxed{ \ time = \frac{0.3 \ m}{2.998 \times 10^8 \ m/s} \ }

<h3>Learn more</h3>
  1. Representation of .000025 in scientific notation brainly.com/question/10830549
  2. What is the speed of light in km/hr and mi/min? brainly.com/question/2088710#
  3. About the engine displacement of Kawasaki Ninja brainly.com/question/5009365

Keywords: the speed of light is 2.998 x 10⁸ m/s, how long, travel, cm, conversion, length, the scientific notation, rounding, math expression, time, distance

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