At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three directions. as a result, three forces act on the ball, , , and (see the drawing). the magnitudes of and are f1 = 61.0 newtons (n) and f2 = 66.0 n. determine (a) the magnitude of and (b) the angle θ such that the resultant force acting on the ball is zero.

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages