Answer:
The river bank can expand due to the water breaking apart which can cause sediment to move and change/erode
Wavelength times frequency = speed of light
7.5E14 x wavelength = 300,000 m/s
Wavelength in meters = 300,000 divided by 7.5E14
On sources it says it would just be the super giant star
A coil of wire with a current flowing thru it becomes a magnet
