Tuesday

September 30, 2014

September 30, 2014

Posted by **Mark** on Monday, November 16, 2009 at 11:01am.

- Physics-Astronomy -
**drwls**, Monday, November 16, 2009 at 11:47amIf the star moving away from earth, which is the usual case, the shift is towards the red.

You can use the formula

(delta lambda)/lambda = v/c = 0.002

'delta lambda' is the Doppler shift of wavelength, lambda. That is what they are asking for.

There is a more accurate relativistically correct formula that is the same whether the observer or the source is moving, but at this low v/c value, it gives nearly the same result.

**Answer this Question**

**Related Questions**

astronomy - A line in star's spectrum lies at 400.0 nanometers. In the ...

Physics - A block of mass m1=1.6kg, initially moving to the right with a ...

Astronomy help! - The average speed of stars relative to the Sun in the solar ...

physics - Marks: 2 The time taken by the space craft moving at a speed equal ...

physics - Marks: 2 The time taken by the space craft moving at a speed equal ...

Astronomy - The apparent brightness of a Cepheid variable star in a far-away ...

physics - A glider with a mass of 3 kg is moving rightward at a speed of 2 m/s ...

Physics - What is the kinetic energy of an electron {mass = 9.1 x 10^ - 31 kg} ...

Physics - A cannon placed at the top of a 100.0 m high cliff fires horizontally ...

Physics - Hi guys, Im a bit stumped on how to solve an online physics homework ...