What's a good sentence describing my roller coaster

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

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

The movement of electrons between atoms is called an