Edwin hubble used his telescope to show that when galaxies are moving away from us, they give off red light.
a: true
b: false

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your