Please help

A student is trying to calculate the coefficent of friction between a box and a surface. She measures that the 80kg box will slide if the student pushes with a force greater than 382N. Answer each of the following questions for the case in which the student is pushing as hard as possible without causing the box to slide. How many forces are acting on the box? What is the magnitude of the friction? unit What is the magnitude of the normal force from the floor? unit Which coefficient of friction can be determined in this case? What is the value of this coefficient friction? unit