To which category does galaxy #2 belong? Why does it belong in this category?

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.