Jack and jill ran up the hill at 2.8 m/s . the horizontal component of jill's velocity vector was 2.1 m/s . what was the angle of the hill? what was the vertical component of jill's velocity?

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

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

Which are true about beta reactions? there will be more than one answer. a. it has no change b. it doesn't change the mass of the number c. it has a mass of 0.0005 atoms d. it causes transmutation.