An ant clings to the outside edge of the tire of an exercise bicycle. When you start pedaling, the ant's speed increases from ze
ro to 12 m/s in3.3 s . The wheel's rotational acceleration is11 rad/s2 . 1: Determine the average tangential acceleration of the tire.
2: Determine the radius of the tire.
3: Determine the angle the ant has turned during this time interval.
4: Determine the distance the ant has traveled along the arc during this time interval.
Why do transformers hum? Transformer noise is caused by a phenomenon which causes a piece of magnetic sheet steel to extend itself when magnetized. When the magnetization is taken away, it goes back to its original condition. This phenomenon is scientifically referred to as magnetostriction.