in the electrochemical cell ni(s) | ni²⁺(1 m) || h⁺(1 m) | h₂(1 atm) | pt(s), which change will cause e of the cell to decrease?

Un jugador de beisbol batea un foul recto en el aire.la pelota deja el bate con una rapidez de 120 km/h. en ausencia de resistencia del aire. ? cual sera la rapidez de la pelota cuando la atrape el catcher

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

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm