block A which is 19.3 N is placed on a frictionless ramp that is inclined at 15 degrees. Block B which is 15.7 N is placed on top of the block, and is attached to the wall by a thin cord. When the objects are released , block A slides down the ramp at a constant speed. Find
1: the coefficient of kinetic friction between the block and the board.
2: the tension in the cord.