Light weight from a star has a frequency of 6.67×10 to the power of 14 Hz and a wavelength of 4.50×10 to the power of -7 m star is 4.00×10 to the power of 16 m away from earth calculate the time it takes like a star to reach earth

Which of the following is an example of motion in two dimensions?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

Which of these is the best way to manage a natural resource