A

1003099205

Level: 
A
Mass of a hydrogen atom is \( 0.000\,000\,000\,000\,000\,000\,000\,001\,67\,\mathrm{g} \). Give the mass in exponential notation.
\( 1.67\cdot10^{-24}\,\mathrm{g} \)
\( 167\cdot10^{-26}\,\mathrm{g} \)
\( 1.67\cdot10^{24}\,\mathrm{g} \)
\( 167\cdot10^{-21}\,\mathrm{g} \)

1003099204

Level: 
A
Consider the information given in the table. Calculate the shortest distance between Neptune (the farthest planet from the Sun) and Mercury (the closest planet to the Sun). \[ \begin{array}{|c|c|} \hline \text{Planet} & \text{Distance from the Sun } (\mathrm{km} ) \\\hline \text{Mercury} & 5.8\cdot10^7 \\\hline \text{Neptune} & 4.5\cdot10^9 \\\hline \end{array} \]
\( 4.442\cdot10^9\,\mathrm{km} \)
\( 4.558\cdot10^9\,\mathrm{km} \)
\( 1.3\cdot10^7\,\mathrm{km} \)
\( 1.3\cdot10^9\,\mathrm{km} \)

1003099203

Level: 
A
A man sleeps \( 8 \) hours a day on average. How many seconds on average does he sleep during the longest month of the year? Give the result in exponential notation.
\( 8.928\cdot10^5\,\mathrm{s} \)
\( 1.488\cdot10^4\,\mathrm{s} \)
\( 8928\cdot10^2\,\mathrm{s} \)
\( 8.64\cdot10^5\,\mathrm{s} \)

1003099201

Level: 
A
A toe sometimes appears as a unit of energy in various publications. One toe is a unit of energy defined as the amount of energy released by burning one tonne of crude oil and it equals \( 41 868\,\mathrm{MJ} \) (\( 1 \,\mathrm{MJ} = 1\, 000\, 000 \,\mathrm{J} \)). How many joules are in \( 1 \) toe?
\( 4.1868\cdot10^{10} \)
\( 4.1868\cdot10^{8} \)
\( 4.1868\cdot10^{9} \)
\( 4.1868\cdot10^{11} \)