With what speed should a star move with respect to us so that the beam at wavelength 460.0 nm is observed at 460.8nm?

Explanation

To determine the speed at which a star should move with respect to us so that the beam at a wavelength of 460.0 nm is observed at 460.8 nm, we can use the formula for the Doppler effect in light.

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Original wavelength (\( \lambda_0 \)) = 460.0 nm
- Observed wavelength (\( \lambda \)) = 460.8 nm

...