.effective-forces{width:129px; height:106px ;}
.prescott-Joule{width:69px; height:89px ;}
.worker{width:120px; height:183px ;}
.work-formula{width:153px; height:39px ;}
.trigonometric-values{width:206px; height:82px ;}
.work-problem3{width:166px; height:95px ;}
.work-problem4{width:221px; height:132px ;}
.work-problem5{width:199px; height:70px ;}
.work-problem{width:155px; height:125px ;}
.work-problem2{width:189px; height:83px ;}
.work-problem6{width:111px; height:192px ;}
.work-problem7{width:148px; height:69px ;}
.work-problem8{width:200px; height:88px ;}
.work-problem8b{width:185px; height:248px ;}