In 2020, Utqiaġvik, Alaska (formerly Barrow) recorded about \(530\) millimeters of snow. Write this amount in meters using scientific notation with the correct number of significant figures.
\(5.3 \times 10^{-1}\, \text{m}\)
Correct!
\(530 \times 10{-3}\, \text{m}\)
Try again. This is correct, but not in scientific notation.
\(5.3 \times 10^{-3}\, \text{m}\)
Try again. Mili does mean \(10^{-3}\text{,}\) so \(530\) millimeters is \(530 \times 10^{-3}\, \text{m}\text{.}\) But now you need to convert this to scientific notation.
\(5.3 \times 10^3\)
Try again. Mili does mean \(10^{-3}\text{,}\) so \(530\) millimeters is \(530 \times 10^{-3}\, \text{m}\text{.}\) But now you need to convert this to scientific notation.
at an average rate of \(0.279\) exagrams per year. Convert this mass per year into kilograms per year using scientific notation with the correct number of significant figures.
\(2.79 \times 10^{14}\, \text{kg/yr}\)
Correct!
\(0.279 \times 10^{18}\, \text{kg/yr}\)
Try again. Exa means \(10^{18}\text{,}\) so \(0.279\) exagrams \(=0.279 \times 10^{18}\, \text{g}\text{.}\) However, we need to convert this to kilograms. \(1\) kilogram = \(10^3\) grams, so we need to divide by \(10^3\text{.}\)
\(2.79 \times 10^{18}\, \text{kg/yr}\)
Try again. Exa means \(10^{18}\text{,}\) so \(0.279\) exagrams \(=0.279 \times 10^{18}\, \text{kg}\text{.}\) However, we need to convert this to kilograms. \(1\) kilogram = \(10^3\) grams, so we need to divide by \(10^3\text{.}\)
\(2.79 \times 10^{17}\, \text{kg/yr}\)
Try again. Exa means \(10^{18}\text{,}\) so \(0.279\) exagrams \(=0.279 \times 10^{18}\, \text{kg}\text{.}\) However, we need to convert this to kilograms. \(1\) kilogram = \(10^3\) grams, so we need to divide by \(10^3\text{.}\)
Checkpoint4.3.3.
A typical \(1\, \text{kW}\) rooftop solar panel system can generate about \(3.6 \times 10^9\) joules of energy over a year in sunny regions. Express this annual energy in joules using a unit prefix. The SI symbol for joule is \(\text{J}\text{.}\)
\(3.6\, \text{GJ}\)
Correct!
\(3.6\, \text{MJ}\)
Try again. Mega means \(10^6\text{,}\) not \(10^9\text{.}\)
\(3.6\, \text{gJ}\)
Try again. There is no prefix \(\text{g}\text{.}\)
\(3.6\, \text{nJ}\)
Try again. On the right track, but nano means \(10^{-9}\text{,}\) not \(10^9\text{.}\)
