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Standard Form and Compound Interest - Converting Metric Prefixes Using Powers of Ten

Standard Form and Compound Interest - Converting Metric Prefixes Using Powers of Ten

Secondary 3

The speed of light is \(3 \times 10^{5}\) km/s.

  1. Express the speed of light in metres per second.
    Give your answer in standard form.
  2. Find the time taken by light to travel \(10\) metres.
    Give your answer in nanoseconds. (\(1\text{ nano} = 10^{-9}\))

Solution:

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Answer:(i) \(3\times {{10}^{8}}\)m/s (ii) \(33.3\) ns

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