Acoil visbreaker operates at 500°c for 1 min. how long will it take to achieve the same thermal severity at 450°c in a soaker visbreaking process? an apparent arrhenius activation energy for thermal cracking is given as 50 kcal/mol. show each step of calculations in your answer.

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

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?