Pls, help me quick! :( I need a lot of help.

Abox is pushed down at an angle of 32 degrees on a rough surface. the box moves to the right.what equation should be used to find the net force in the y-direction? answers: a. fnet,y = fn - fgb. fnet,y= fp - ffc. fnet,y = fn-fg- fpcos(32)d. fnet,y = fn-fg-fpsin(32)

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?