Aspectral line from a star is observed to have a wavelength of 656.5 nm. the rest wavelength of this line is 656.8 nm. (a) what is the speed of the star, and (b) is it approaching or receding from the earth? (c) if the star’s emitted wavelength is the same as the rest value, what is happening?
Answers: 3
Physics, 22.06.2019 12:10, lks715
Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
Answers: 3
Physics, 22.06.2019 16:20, punkieladie
What organization and environment is described above?
Answers: 1
Aspectral line from a star is observed to have a wavelength of 656.5 nm. the rest wavelength of this...
Mathematics, 24.09.2019 00:10
Chemistry, 24.09.2019 00:10