The mass of the Sun is $1.99\times {{10}^{27}}$ tonnes. Write this mass, in kilograms, giving your

Question

The mass of the Sun is $1.99\times {{10}^{27}}$ tonnes. Write this mass, in kilograms, giving your answer in standard form. ($1$ tonne $=1000$kg) The radius of a micro-organism is $0.000\,054\,65$cm. Express $0.000\,054\,65$cm in standard form, giving your answer correct to $3$ significant figures.

Accepted Answer

(i) $1.99\times10^{30}\text{ kg}$. (ii) $5.47\times10^{-5}\text{ cm}$ (3 s.f.).

Standard Form in Measurement Problems

Standard Form in Measurement Problems

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