The speed of light is approximately 3imes1083 imes 10^83imes108 m/s. If a star is 4 light-years away, what is its distance in kilometers? (1 light-year = distance light travels in one year)
3.8imes10103.8 imes 10^{10}3.8imes1010 km
1.2imes10131.2 imes 10^{13}1.2imes1013 km
3.8imes10133.8 imes 10^{13}3.8imes1013 km
1.2imes1091.2 imes 10^91.2imes109 km
Related Questions
Which of the following sets have different dimensions?
Pressure, Young’s modulus, Stress
Emf, Potential difference, Electric potential
Heat, Work done, Energy
Dipole moment, Electric flux, Electric field
Unit of electric flux is
Vm
Nm/C−1{\rm{Nm}}/{{\rm{C}}^{ - 1}}Nm/C−1
Vm−1{\rm{V}}{{\rm{m}}^{ - 1}}Vm−1
CNm−1{\rm{CN}}{{\rm{m}}^{ - 1}}CNm−1
